Home / 750.20-1,123.92-442.22

Finding the Fourth Proportional to 750.20, 1,123.92 and 442.22

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Solution

The fourth proportional to 750.20, 1,123.92 and 442.22 is: 662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.20 : 1,123.92 = 442.22 : x
  2. Step 2: Convert to fraction form
    750.20/1,123.92 = 442.22/x
  3. Step 3: Cross multiply
    750.20x = 1,123.92 × 442.22
  4. Step 4: Simplify right side
    750.20x = 497,019.90
  5. Step 5: Solve for x
    x = 497,019.90/750.20
  6. Step 6: Final answer
    x = 662.52

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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.