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Finding the Fourth Proportional to 902.68, 1,352.84 and 439.52

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Solution

The fourth proportional to 902.68, 1,352.84 and 439.52 is: 658.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.68 : 1,352.84 = 439.52 : x
  2. Step 2: Convert to fraction form
    902.68/1,352.84 = 439.52/x
  3. Step 3: Cross multiply
    902.68x = 1,352.84 × 439.52
  4. Step 4: Simplify right side
    902.68x = 594,600.24
  5. Step 5: Solve for x
    x = 594,600.24/902.68
  6. Step 6: Final answer
    x = 658.71

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1.5x scale

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.