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Finding the Fourth Proportional to 1,010.73, 1,516.20 and 361.32

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Solution

The fourth proportional to 1,010.73, 1,516.20 and 361.32 is: 542.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.73 : 1,516.20 = 361.32 : x
  2. Step 2: Convert to fraction form
    1,010.73/1,516.20 = 361.32/x
  3. Step 3: Cross multiply
    1,010.73x = 1,516.20 × 361.32
  4. Step 4: Simplify right side
    1,010.73x = 547,833.38
  5. Step 5: Solve for x
    x = 547,833.38/1,010.73
  6. Step 6: Final answer
    x = 542.02

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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.