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Finding the Fourth Proportional to 1,294.56, 1,942.92 and 929.52

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Solution

The fourth proportional to 1,294.56, 1,942.92 and 929.52 is: 1,395.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294.56 : 1,942.92 = 929.52 : x
  2. Step 2: Convert to fraction form
    1,294.56/1,942.92 = 929.52/x
  3. Step 3: Cross multiply
    1,294.56x = 1,942.92 × 929.52
  4. Step 4: Simplify right side
    1,294.56x = 1,805,983.00
  5. Step 5: Solve for x
    x = 1,805,983.00/1,294.56
  6. Step 6: Final answer
    x = 1,395.06

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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.