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Finding the Fourth Proportional to 1,317.46, 1,976.60 and 952.38

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Solution

The fourth proportional to 1,317.46, 1,976.60 and 952.38 is: 1,428.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.46 : 1,976.60 = 952.38 : x
  2. Step 2: Convert to fraction form
    1,317.46/1,976.60 = 952.38/x
  3. Step 3: Cross multiply
    1,317.46x = 1,976.60 × 952.38
  4. Step 4: Simplify right side
    1,317.46x = 1,882,474.31
  5. Step 5: Solve for x
    x = 1,882,474.31/1,317.46
  6. Step 6: Final answer
    x = 1,428.87

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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.