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Finding the Fourth Proportional to 1,142.12, 1,711.16 and 524.52

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Solution

The fourth proportional to 1,142.12, 1,711.16 and 524.52 is: 785.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142.12 : 1,711.16 = 524.52 : x
  2. Step 2: Convert to fraction form
    1,142.12/1,711.16 = 524.52/x
  3. Step 3: Cross multiply
    1,142.12x = 1,711.16 × 524.52
  4. Step 4: Simplify right side
    1,142.12x = 897,542.80
  5. Step 5: Solve for x
    x = 897,542.80/1,142.12
  6. Step 6: Final answer
    x = 785.86

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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.