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Finding the Fourth Proportional to 702.70, 971.49 and 673.18

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Solution

The fourth proportional to 702.70, 971.49 and 673.18 is: 930.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.70 : 971.49 = 673.18 : x
  2. Step 2: Convert to fraction form
    702.70/971.49 = 673.18/x
  3. Step 3: Cross multiply
    702.70x = 971.49 × 673.18
  4. Step 4: Simplify right side
    702.70x = 653,987.64
  5. Step 5: Solve for x
    x = 653,987.64/702.70
  6. Step 6: Final answer
    x = 930.68

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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.