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Finding the Fourth Proportional to 1,516.43, 2,274.55 and 542.57

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Solution

The fourth proportional to 1,516.43, 2,274.55 and 542.57 is: 813.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.43 : 2,274.55 = 542.57 : x
  2. Step 2: Convert to fraction form
    1,516.43/2,274.55 = 542.57/x
  3. Step 3: Cross multiply
    1,516.43x = 2,274.55 × 542.57
  4. Step 4: Simplify right side
    1,516.43x = 1,234,089.86
  5. Step 5: Solve for x
    x = 1,234,089.86/1,516.43
  6. Step 6: Final answer
    x = 813.81

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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.