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Finding the Fourth Proportional to 549.97, 758.97 and 313.90

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Solution

The fourth proportional to 549.97, 758.97 and 313.90 is: 433.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.97 : 758.97 = 313.90 : x
  2. Step 2: Convert to fraction form
    549.97/758.97 = 313.90/x
  3. Step 3: Cross multiply
    549.97x = 758.97 × 313.90
  4. Step 4: Simplify right side
    549.97x = 238,240.68
  5. Step 5: Solve for x
    x = 238,240.68/549.97
  6. Step 6: Final answer
    x = 433.19

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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.