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Finding the Fourth Proportional to 616.77, 851.57 and 474.73

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Solution

The fourth proportional to 616.77, 851.57 and 474.73 is: 655.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.77 : 851.57 = 474.73 : x
  2. Step 2: Convert to fraction form
    616.77/851.57 = 474.73/x
  3. Step 3: Cross multiply
    616.77x = 851.57 × 474.73
  4. Step 4: Simplify right side
    616.77x = 404,265.83
  5. Step 5: Solve for x
    x = 404,265.83/616.77
  6. Step 6: Final answer
    x = 655.46

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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.