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Finding the Fourth Proportional to 754.64, 1,132.29 and 343.82

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Solution

The fourth proportional to 754.64, 1,132.29 and 343.82 is: 515.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.64 : 1,132.29 = 343.82 : x
  2. Step 2: Convert to fraction form
    754.64/1,132.29 = 343.82/x
  3. Step 3: Cross multiply
    754.64x = 1,132.29 × 343.82
  4. Step 4: Simplify right side
    754.64x = 389,303.95
  5. Step 5: Solve for x
    x = 389,303.95/754.64
  6. Step 6: Final answer
    x = 515.88

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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.