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Finding the Fourth Proportional to 153, 230.76 and 147.24

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Solution

The fourth proportional to 153, 230.76 and 147.24 is: 222.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    153 : 230.76 = 147.24 : x
  2. Step 2: Convert to fraction form
    153/230.76 = 147.24/x
  3. Step 3: Cross multiply
    153x = 230.76 × 147.24
  4. Step 4: Simplify right side
    153x = 33,977.10
  5. Step 5: Solve for x
    x = 33,977.10/153
  6. Step 6: Final answer
    x = 222.07

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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.