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Finding the Fourth Proportional to 754.59, 1,124.32 and 672.75

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Solution

The fourth proportional to 754.59, 1,124.32 and 672.75 is: 1,002.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.59 : 1,124.32 = 672.75 : x
  2. Step 2: Convert to fraction form
    754.59/1,124.32 = 672.75/x
  3. Step 3: Cross multiply
    754.59x = 1,124.32 × 672.75
  4. Step 4: Simplify right side
    754.59x = 756,386.28
  5. Step 5: Solve for x
    x = 756,386.28/754.59
  6. Step 6: Final answer
    x = 1,002.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.