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Finding the Fourth Proportional to 697.61, 963.92 and 549.41

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Solution

The fourth proportional to 697.61, 963.92 and 549.41 is: 759.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.61 : 963.92 = 549.41 : x
  2. Step 2: Convert to fraction form
    697.61/963.92 = 549.41/x
  3. Step 3: Cross multiply
    697.61x = 963.92 × 549.41
  4. Step 4: Simplify right side
    697.61x = 529,583.67
  5. Step 5: Solve for x
    x = 529,583.67/697.61
  6. Step 6: Final answer
    x = 759.15

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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.