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Finding the Fourth Proportional to 702.48, 968.76 and 554.88

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Solution

The fourth proportional to 702.48, 968.76 and 554.88 is: 765.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.48 : 968.76 = 554.88 : x
  2. Step 2: Convert to fraction form
    702.48/968.76 = 554.88/x
  3. Step 3: Cross multiply
    702.48x = 968.76 × 554.88
  4. Step 4: Simplify right side
    702.48x = 537,545.55
  5. Step 5: Solve for x
    x = 537,545.55/702.48
  6. Step 6: Final answer
    x = 765.21

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1.5x scale

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.