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Finding the Fourth Proportional to 697.49, 1,043.56 and 610.18

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Solution

The fourth proportional to 697.49, 1,043.56 and 610.18 is: 912.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.49 : 1,043.56 = 610.18 : x
  2. Step 2: Convert to fraction form
    697.49/1,043.56 = 610.18/x
  3. Step 3: Cross multiply
    697.49x = 1,043.56 × 610.18
  4. Step 4: Simplify right side
    697.49x = 636,755.31
  5. Step 5: Solve for x
    x = 636,755.31/697.49
  6. Step 6: Final answer
    x = 912.93

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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.