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Finding the Fourth Proportional to 736.29, 1,016.13 and 487.18

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Solution

The fourth proportional to 736.29, 1,016.13 and 487.18 is: 672.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.29 : 1,016.13 = 487.18 : x
  2. Step 2: Convert to fraction form
    736.29/1,016.13 = 487.18/x
  3. Step 3: Cross multiply
    736.29x = 1,016.13 × 487.18
  4. Step 4: Simplify right side
    736.29x = 495,038.21
  5. Step 5: Solve for x
    x = 495,038.21/736.29
  6. Step 6: Final answer
    x = 672.34

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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.