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Finding the Fourth Proportional to 1,516.28, 2,274 and 542.24

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Solution

The fourth proportional to 1,516.28, 2,274 and 542.24 is: 813.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.28 : 2,274 = 542.24 : x
  2. Step 2: Convert to fraction form
    1,516.28/2,274 = 542.24/x
  3. Step 3: Cross multiply
    1,516.28x = 2,274 × 542.24
  4. Step 4: Simplify right side
    1,516.28x = 1,233,053.76
  5. Step 5: Solve for x
    x = 1,233,053.76/1,516.28
  6. Step 6: Final answer
    x = 813.21

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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.