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Finding the Fourth Proportional to 147.67, 221.45 and 95.58

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Solution

The fourth proportional to 147.67, 221.45 and 95.58 is: 143.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.67 : 221.45 = 95.58 : x
  2. Step 2: Convert to fraction form
    147.67/221.45 = 95.58/x
  3. Step 3: Cross multiply
    147.67x = 221.45 × 95.58
  4. Step 4: Simplify right side
    147.67x = 21,165.71
  5. Step 5: Solve for x
    x = 21,165.71/147.67
  6. Step 6: Final answer
    x = 143.33

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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.