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Finding the Fourth Proportional to 207.05, 310.10 and 158.39

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Solution

The fourth proportional to 207.05, 310.10 and 158.39 is: 237.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.05 : 310.10 = 158.39 : x
  2. Step 2: Convert to fraction form
    207.05/310.10 = 158.39/x
  3. Step 3: Cross multiply
    207.05x = 310.10 × 158.39
  4. Step 4: Simplify right side
    207.05x = 49,115.95
  5. Step 5: Solve for x
    x = 49,115.95/207.05
  6. Step 6: Final answer
    x = 237.22

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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.