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Finding the Fourth Proportional to 310.96, 429.10 and 183.18

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Solution

The fourth proportional to 310.96, 429.10 and 183.18 is: 252.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.96 : 429.10 = 183.18 : x
  2. Step 2: Convert to fraction form
    310.96/429.10 = 183.18/x
  3. Step 3: Cross multiply
    310.96x = 429.10 × 183.18
  4. Step 4: Simplify right side
    310.96x = 78,603.38
  5. Step 5: Solve for x
    x = 78,603.38/310.96
  6. Step 6: Final answer
    x = 252.78

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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.