Home / 758.03-1,138.40-498.56

Finding the Fourth Proportional to 758.03, 1,138.40 and 498.56

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Solution

The fourth proportional to 758.03, 1,138.40 and 498.56 is: 748.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.03 : 1,138.40 = 498.56 : x
  2. Step 2: Convert to fraction form
    758.03/1,138.40 = 498.56/x
  3. Step 3: Cross multiply
    758.03x = 1,138.40 × 498.56
  4. Step 4: Simplify right side
    758.03x = 567,560.70
  5. Step 5: Solve for x
    x = 567,560.70/758.03
  6. Step 6: Final answer
    x = 748.73

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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.