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Finding the Fourth Proportional to 153.13, 230.84 and 146.95

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Solution

The fourth proportional to 153.13, 230.84 and 146.95 is: 221.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.13 : 230.84 = 146.95 : x
  2. Step 2: Convert to fraction form
    153.13/230.84 = 146.95/x
  3. Step 3: Cross multiply
    153.13x = 230.84 × 146.95
  4. Step 4: Simplify right side
    153.13x = 33,921.94
  5. Step 5: Solve for x
    x = 33,921.94/153.13
  6. Step 6: Final answer
    x = 221.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.