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Finding the Fourth Proportional to 697.53, 962.49 and 449.18

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Solution

The fourth proportional to 697.53, 962.49 and 449.18 is: 619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.53 : 962.49 = 449.18 : x
  2. Step 2: Convert to fraction form
    697.53/962.49 = 449.18/x
  3. Step 3: Cross multiply
    697.53x = 962.49 × 449.18
  4. Step 4: Simplify right side
    697.53x = 432,331.26
  5. Step 5: Solve for x
    x = 432,331.26/697.53
  6. Step 6: Final answer
    x = 619.80

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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.