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Finding the Fourth Proportional to 1,352.29, 1,866.27 and 762.87

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Solution

The fourth proportional to 1,352.29, 1,866.27 and 762.87 is: 1,052.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.29 : 1,866.27 = 762.87 : x
  2. Step 2: Convert to fraction form
    1,352.29/1,866.27 = 762.87/x
  3. Step 3: Cross multiply
    1,352.29x = 1,866.27 × 762.87
  4. Step 4: Simplify right side
    1,352.29x = 1,423,721.39
  5. Step 5: Solve for x
    x = 1,423,721.39/1,352.29
  6. Step 6: Final answer
    x = 1,052.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.