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Finding the Fourth Proportional to 902.76, 1,352.17 and 439.55

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Solution

The fourth proportional to 902.76, 1,352.17 and 439.55 is: 658.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.76 : 1,352.17 = 439.55 : x
  2. Step 2: Convert to fraction form
    902.76/1,352.17 = 439.55/x
  3. Step 3: Cross multiply
    902.76x = 1,352.17 × 439.55
  4. Step 4: Simplify right side
    902.76x = 594,346.32
  5. Step 5: Solve for x
    x = 594,346.32/902.76
  6. Step 6: Final answer
    x = 658.37

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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.