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Finding the Fourth Proportional to 701.30, 965.84 and 561.18

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Solution

The fourth proportional to 701.30, 965.84 and 561.18 is: 772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.30 : 965.84 = 561.18 : x
  2. Step 2: Convert to fraction form
    701.30/965.84 = 561.18/x
  3. Step 3: Cross multiply
    701.30x = 965.84 × 561.18
  4. Step 4: Simplify right side
    701.30x = 542,010.09
  5. Step 5: Solve for x
    x = 542,010.09/701.30
  6. Step 6: Final answer
    x = 772.86

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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.