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Finding the Fourth Proportional to 902.38, 1,350.60 and 684.76

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Solution

The fourth proportional to 902.38, 1,350.60 and 684.76 is: 1,024.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.38 : 1,350.60 = 684.76 : x
  2. Step 2: Convert to fraction form
    902.38/1,350.60 = 684.76/x
  3. Step 3: Cross multiply
    902.38x = 1,350.60 × 684.76
  4. Step 4: Simplify right side
    902.38x = 924,836.86
  5. Step 5: Solve for x
    x = 924,836.86/902.38
  6. Step 6: Final answer
    x = 1,024.89

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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.