Home / 758.27-1,139.55-450.18

Finding the Fourth Proportional to 758.27, 1,139.55 and 450.18

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Solution

The fourth proportional to 758.27, 1,139.55 and 450.18 is: 676.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.27 : 1,139.55 = 450.18 : x
  2. Step 2: Convert to fraction form
    758.27/1,139.55 = 450.18/x
  3. Step 3: Cross multiply
    758.27x = 1,139.55 × 450.18
  4. Step 4: Simplify right side
    758.27x = 513,002.62
  5. Step 5: Solve for x
    x = 513,002.62/758.27
  6. Step 6: Final answer
    x = 676.54

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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.