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Finding the Fourth Proportional to 736.86, 1,017.11 and 488.20

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Solution

The fourth proportional to 736.86, 1,017.11 and 488.20 is: 673.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.86 : 1,017.11 = 488.20 : x
  2. Step 2: Convert to fraction form
    736.86/1,017.11 = 488.20/x
  3. Step 3: Cross multiply
    736.86x = 1,017.11 × 488.20
  4. Step 4: Simplify right side
    736.86x = 496,553.10
  5. Step 5: Solve for x
    x = 496,553.10/736.86
  6. Step 6: Final answer
    x = 673.88

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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.