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Finding the Fourth Proportional to 158.95, 238.47 and 147.34

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Solution

The fourth proportional to 158.95, 238.47 and 147.34 is: 221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.95 : 238.47 = 147.34 : x
  2. Step 2: Convert to fraction form
    158.95/238.47 = 147.34/x
  3. Step 3: Cross multiply
    158.95x = 238.47 × 147.34
  4. Step 4: Simplify right side
    158.95x = 35,136.17
  5. Step 5: Solve for x
    x = 35,136.17/158.95
  6. Step 6: Final answer
    x = 221.05

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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.