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Finding the Fourth Proportional to 1,363.74, 2,046.42 and 542.40

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Solution

The fourth proportional to 1,363.74, 2,046.42 and 542.40 is: 813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363.74 : 2,046.42 = 542.40 : x
  2. Step 2: Convert to fraction form
    1,363.74/2,046.42 = 542.40/x
  3. Step 3: Cross multiply
    1,363.74x = 2,046.42 × 542.40
  4. Step 4: Simplify right side
    1,363.74x = 1,109,978.21
  5. Step 5: Solve for x
    x = 1,109,978.21/1,363.74
  6. Step 6: Final answer
    x = 813.92

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