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Finding the Fourth Proportional to 252.05, 347.76 and 158.90

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Solution

The fourth proportional to 252.05, 347.76 and 158.90 is: 219.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.05 : 347.76 = 158.90 : x
  2. Step 2: Convert to fraction form
    252.05/347.76 = 158.90/x
  3. Step 3: Cross multiply
    252.05x = 347.76 × 158.90
  4. Step 4: Simplify right side
    252.05x = 55,259.06
  5. Step 5: Solve for x
    x = 55,259.06/252.05
  6. Step 6: Final answer
    x = 219.24

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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.