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Finding the Fourth Proportional to 1,041.82, 1,562.73 and 392.55

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Solution

The fourth proportional to 1,041.82, 1,562.73 and 392.55 is: 588.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.82 : 1,562.73 = 392.55 : x
  2. Step 2: Convert to fraction form
    1,041.82/1,562.73 = 392.55/x
  3. Step 3: Cross multiply
    1,041.82x = 1,562.73 × 392.55
  4. Step 4: Simplify right side
    1,041.82x = 613,449.66
  5. Step 5: Solve for x
    x = 613,449.66/1,041.82
  6. Step 6: Final answer
    x = 588.83

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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.