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Finding the Fourth Proportional to 766.24, 1,057.41 and 416.92

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Solution

The fourth proportional to 766.24, 1,057.41 and 416.92 is: 575.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.24 : 1,057.41 = 416.92 : x
  2. Step 2: Convert to fraction form
    766.24/1,057.41 = 416.92/x
  3. Step 3: Cross multiply
    766.24x = 1,057.41 × 416.92
  4. Step 4: Simplify right side
    766.24x = 440,855.38
  5. Step 5: Solve for x
    x = 440,855.38/766.24
  6. Step 6: Final answer
    x = 575.35

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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.