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Finding the Fourth Proportional to 863.49, 1,295.04 and 247.03

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Solution

The fourth proportional to 863.49, 1,295.04 and 247.03 is: 370.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.49 : 1,295.04 = 247.03 : x
  2. Step 2: Convert to fraction form
    863.49/1,295.04 = 247.03/x
  3. Step 3: Cross multiply
    863.49x = 1,295.04 × 247.03
  4. Step 4: Simplify right side
    863.49x = 319,909.80
  5. Step 5: Solve for x
    x = 319,909.80/863.49
  6. Step 6: Final answer
    x = 370.49

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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.