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Finding the Fourth Proportional to 549.02, 757.72 and 316.19

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Solution

The fourth proportional to 549.02, 757.72 and 316.19 is: 436.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.02 : 757.72 = 316.19 : x
  2. Step 2: Convert to fraction form
    549.02/757.72 = 316.19/x
  3. Step 3: Cross multiply
    549.02x = 757.72 × 316.19
  4. Step 4: Simplify right side
    549.02x = 239,585.78
  5. Step 5: Solve for x
    x = 239,585.78/549.02
  6. Step 6: Final answer
    x = 436.39

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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.