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Finding the Fourth Proportional to 1,352.42, 1,866.28 and 754.90

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Solution

The fourth proportional to 1,352.42, 1,866.28 and 754.90 is: 1,041.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.42 : 1,866.28 = 754.90 : x
  2. Step 2: Convert to fraction form
    1,352.42/1,866.28 = 754.90/x
  3. Step 3: Cross multiply
    1,352.42x = 1,866.28 × 754.90
  4. Step 4: Simplify right side
    1,352.42x = 1,408,854.77
  5. Step 5: Solve for x
    x = 1,408,854.77/1,352.42
  6. Step 6: Final answer
    x = 1,041.73

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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.