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Finding the Fourth Proportional to 707.25, 1,060.88 and 663.97

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Solution

The fourth proportional to 707.25, 1,060.88 and 663.97 is: 995.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.25 : 1,060.88 = 663.97 : x
  2. Step 2: Convert to fraction form
    707.25/1,060.88 = 663.97/x
  3. Step 3: Cross multiply
    707.25x = 1,060.88 × 663.97
  4. Step 4: Simplify right side
    707.25x = 704,386.52
  5. Step 5: Solve for x
    x = 704,386.52/707.25
  6. Step 6: Final answer
    x = 995.95

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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.