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Finding the Fourth Proportional to 927.66, 1,391.84 and 562.71

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Solution

The fourth proportional to 927.66, 1,391.84 and 562.71 is: 844.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.66 : 1,391.84 = 562.71 : x
  2. Step 2: Convert to fraction form
    927.66/1,391.84 = 562.71/x
  3. Step 3: Cross multiply
    927.66x = 1,391.84 × 562.71
  4. Step 4: Simplify right side
    927.66x = 783,202.29
  5. Step 5: Solve for x
    x = 783,202.29/927.66
  6. Step 6: Final answer
    x = 844.28

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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.