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Finding the Fourth Proportional to 475.73, 656.47 and 279.27

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Solution

The fourth proportional to 475.73, 656.47 and 279.27 is: 385.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.73 : 656.47 = 279.27 : x
  2. Step 2: Convert to fraction form
    475.73/656.47 = 279.27/x
  3. Step 3: Cross multiply
    475.73x = 656.47 × 279.27
  4. Step 4: Simplify right side
    475.73x = 183,332.38
  5. Step 5: Solve for x
    x = 183,332.38/475.73
  6. Step 6: Final answer
    x = 385.37

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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.