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Finding the Fourth Proportional to 549.99, 759.11 and 375.21

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Solution

The fourth proportional to 549.99, 759.11 and 375.21 is: 517.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.99 : 759.11 = 375.21 : x
  2. Step 2: Convert to fraction form
    549.99/759.11 = 375.21/x
  3. Step 3: Cross multiply
    549.99x = 759.11 × 375.21
  4. Step 4: Simplify right side
    549.99x = 284,823.79
  5. Step 5: Solve for x
    x = 284,823.79/549.99
  6. Step 6: Final answer
    x = 517.87

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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.