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Finding the Fourth Proportional to 702.06, 968.88 and 515.46

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Solution

The fourth proportional to 702.06, 968.88 and 515.46 is: 711.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.06 : 968.88 = 515.46 : x
  2. Step 2: Convert to fraction form
    702.06/968.88 = 515.46/x
  3. Step 3: Cross multiply
    702.06x = 968.88 × 515.46
  4. Step 4: Simplify right side
    702.06x = 499,418.88
  5. Step 5: Solve for x
    x = 499,418.88/702.06
  6. Step 6: Final answer
    x = 711.36

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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.