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Finding the Fourth Proportional to 622.92, 929.85 and 571.56

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Solution

The fourth proportional to 622.92, 929.85 and 571.56 is: 853.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.92 : 929.85 = 571.56 : x
  2. Step 2: Convert to fraction form
    622.92/929.85 = 571.56/x
  3. Step 3: Cross multiply
    622.92x = 929.85 × 571.56
  4. Step 4: Simplify right side
    622.92x = 531,465.07
  5. Step 5: Solve for x
    x = 531,465.07/622.92
  6. Step 6: Final answer
    x = 853.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.