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Finding the Fourth Proportional to 1,328.17, 1,992.27 and 462.49

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Solution

The fourth proportional to 1,328.17, 1,992.27 and 462.49 is: 693.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328.17 : 1,992.27 = 462.49 : x
  2. Step 2: Convert to fraction form
    1,328.17/1,992.27 = 462.49/x
  3. Step 3: Cross multiply
    1,328.17x = 1,992.27 × 462.49
  4. Step 4: Simplify right side
    1,328.17x = 921,393.83
  5. Step 5: Solve for x
    x = 921,393.83/1,328.17
  6. Step 6: Final answer
    x = 693.73

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.