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Finding the Fourth Proportional to 148.95, 222.40 and 118.17

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Solution

The fourth proportional to 148.95, 222.40 and 118.17 is: 176.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.95 : 222.40 = 118.17 : x
  2. Step 2: Convert to fraction form
    148.95/222.40 = 118.17/x
  3. Step 3: Cross multiply
    148.95x = 222.40 × 118.17
  4. Step 4: Simplify right side
    148.95x = 26,281.01
  5. Step 5: Solve for x
    x = 26,281.01/148.95
  6. Step 6: Final answer
    x = 176.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.