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Finding the Fourth Proportional to 835.36, 1,152.78 and 462.36

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Solution

The fourth proportional to 835.36, 1,152.78 and 462.36 is: 638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.36 : 1,152.78 = 462.36 : x
  2. Step 2: Convert to fraction form
    835.36/1,152.78 = 462.36/x
  3. Step 3: Cross multiply
    835.36x = 1,152.78 × 462.36
  4. Step 4: Simplify right side
    835.36x = 532,999.36
  5. Step 5: Solve for x
    x = 532,999.36/835.36
  6. Step 6: Final answer
    x = 638.05

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.