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Finding the Fourth Proportional to 207.14, 310.54 and 141.96

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Solution

The fourth proportional to 207.14, 310.54 and 141.96 is: 212.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.14 : 310.54 = 141.96 : x
  2. Step 2: Convert to fraction form
    207.14/310.54 = 141.96/x
  3. Step 3: Cross multiply
    207.14x = 310.54 × 141.96
  4. Step 4: Simplify right side
    207.14x = 44,084.26
  5. Step 5: Solve for x
    x = 44,084.26/207.14
  6. Step 6: Final answer
    x = 212.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.