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Finding the Fourth Proportional to 902.52, 1,245.92 and 702.96

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Solution

The fourth proportional to 902.52, 1,245.92 and 702.96 is: 970.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.52 : 1,245.92 = 702.96 : x
  2. Step 2: Convert to fraction form
    902.52/1,245.92 = 702.96/x
  3. Step 3: Cross multiply
    902.52x = 1,245.92 × 702.96
  4. Step 4: Simplify right side
    902.52x = 875,828.41
  5. Step 5: Solve for x
    x = 875,828.41/902.52
  6. Step 6: Final answer
    x = 970.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.