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Finding the Fourth Proportional to 736.72, 1,016.22 and 474.40

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Solution

The fourth proportional to 736.72, 1,016.22 and 474.40 is: 654.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.72 : 1,016.22 = 474.40 : x
  2. Step 2: Convert to fraction form
    736.72/1,016.22 = 474.40/x
  3. Step 3: Cross multiply
    736.72x = 1,016.22 × 474.40
  4. Step 4: Simplify right side
    736.72x = 482,094.77
  5. Step 5: Solve for x
    x = 482,094.77/736.72
  6. Step 6: Final answer
    x = 654.38

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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.