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Finding the Fourth Proportional to 549.07, 757.21 and 409.53

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Solution

The fourth proportional to 549.07, 757.21 and 409.53 is: 564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.07 : 757.21 = 409.53 : x
  2. Step 2: Convert to fraction form
    549.07/757.21 = 409.53/x
  3. Step 3: Cross multiply
    549.07x = 757.21 × 409.53
  4. Step 4: Simplify right side
    549.07x = 310,100.21
  5. Step 5: Solve for x
    x = 310,100.21/549.07
  6. Step 6: Final answer
    x = 564.77

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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.