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Finding the Fourth Proportional to 1,344.20, 1,854.97 and 754.85

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Solution

The fourth proportional to 1,344.20, 1,854.97 and 754.85 is: 1,041.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.20 : 1,854.97 = 754.85 : x
  2. Step 2: Convert to fraction form
    1,344.20/1,854.97 = 754.85/x
  3. Step 3: Cross multiply
    1,344.20x = 1,854.97 × 754.85
  4. Step 4: Simplify right side
    1,344.20x = 1,400,226.85
  5. Step 5: Solve for x
    x = 1,400,226.85/1,344.20
  6. Step 6: Final answer
    x = 1,041.68

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1.5x scale

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.