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Finding the Fourth Proportional to 736.42, 1,016.95 and 474.90

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Solution

The fourth proportional to 736.42, 1,016.95 and 474.90 is: 655.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.42 : 1,016.95 = 474.90 : x
  2. Step 2: Convert to fraction form
    736.42/1,016.95 = 474.90/x
  3. Step 3: Cross multiply
    736.42x = 1,016.95 × 474.90
  4. Step 4: Simplify right side
    736.42x = 482,949.56
  5. Step 5: Solve for x
    x = 482,949.56/736.42
  6. Step 6: Final answer
    x = 655.81

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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.