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Finding the Fourth Proportional to 230.51, 318.32 and 147.79

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Solution

The fourth proportional to 230.51, 318.32 and 147.79 is: 204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.51 : 318.32 = 147.79 : x
  2. Step 2: Convert to fraction form
    230.51/318.32 = 147.79/x
  3. Step 3: Cross multiply
    230.51x = 318.32 × 147.79
  4. Step 4: Simplify right side
    230.51x = 47,044.73
  5. Step 5: Solve for x
    x = 47,044.73/230.51
  6. Step 6: Final answer
    x = 204.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.