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Finding the Fourth Proportional to 251.39, 347.06 and 158.16

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Solution

The fourth proportional to 251.39, 347.06 and 158.16 is: 218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.39 : 347.06 = 158.16 : x
  2. Step 2: Convert to fraction form
    251.39/347.06 = 158.16/x
  3. Step 3: Cross multiply
    251.39x = 347.06 × 158.16
  4. Step 4: Simplify right side
    251.39x = 54,891.41
  5. Step 5: Solve for x
    x = 54,891.41/251.39
  6. Step 6: Final answer
    x = 218.35

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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.