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Finding the Fourth Proportional to 702.18, 968.88 and 440.55

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Solution

The fourth proportional to 702.18, 968.88 and 440.55 is: 607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.18 : 968.88 = 440.55 : x
  2. Step 2: Convert to fraction form
    702.18/968.88 = 440.55/x
  3. Step 3: Cross multiply
    702.18x = 968.88 × 440.55
  4. Step 4: Simplify right side
    702.18x = 426,840.08
  5. Step 5: Solve for x
    x = 426,840.08/702.18
  6. Step 6: Final answer
    x = 607.88

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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.