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Finding the Fourth Proportional to 1,472.90, 2,207.91 and 702.50

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Solution

The fourth proportional to 1,472.90, 2,207.91 and 702.50 is: 1,053.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.90 : 2,207.91 = 702.50 : x
  2. Step 2: Convert to fraction form
    1,472.90/2,207.91 = 702.50/x
  3. Step 3: Cross multiply
    1,472.90x = 2,207.91 × 702.50
  4. Step 4: Simplify right side
    1,472.90x = 1,551,056.78
  5. Step 5: Solve for x
    x = 1,551,056.78/1,472.90
  6. Step 6: Final answer
    x = 1,053.06

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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.