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Finding the Fourth Proportional to 622.76, 932.90 and 571.73

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Solution

The fourth proportional to 622.76, 932.90 and 571.73 is: 856.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.76 : 932.90 = 571.73 : x
  2. Step 2: Convert to fraction form
    622.76/932.90 = 571.73/x
  3. Step 3: Cross multiply
    622.76x = 932.90 × 571.73
  4. Step 4: Simplify right side
    622.76x = 533,359.39
  5. Step 5: Solve for x
    x = 533,359.39/622.76
  6. Step 6: Final answer
    x = 856.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.