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Finding the Fourth Proportional to 1,534.38, 2,299.89 and 753.48

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Solution

The fourth proportional to 1,534.38, 2,299.89 and 753.48 is: 1,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.38 : 2,299.89 = 753.48 : x
  2. Step 2: Convert to fraction form
    1,534.38/2,299.89 = 753.48/x
  3. Step 3: Cross multiply
    1,534.38x = 2,299.89 × 753.48
  4. Step 4: Simplify right side
    1,534.38x = 1,732,921.12
  5. Step 5: Solve for x
    x = 1,732,921.12/1,534.38
  6. Step 6: Final answer
    x = 1,129.40

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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.