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Finding the Fourth Proportional to 230.71, 318.36 and 147.67

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Solution

The fourth proportional to 230.71, 318.36 and 147.67 is: 203.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.71 : 318.36 = 147.67 : x
  2. Step 2: Convert to fraction form
    230.71/318.36 = 147.67/x
  3. Step 3: Cross multiply
    230.71x = 318.36 × 147.67
  4. Step 4: Simplify right side
    230.71x = 47,012.22
  5. Step 5: Solve for x
    x = 47,012.22/230.71
  6. Step 6: Final answer
    x = 203.77

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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.