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Finding the Fourth Proportional to 247.02, 340.72 and 148.61

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Solution

The fourth proportional to 247.02, 340.72 and 148.61 is: 204.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.02 : 340.72 = 148.61 : x
  2. Step 2: Convert to fraction form
    247.02/340.72 = 148.61/x
  3. Step 3: Cross multiply
    247.02x = 340.72 × 148.61
  4. Step 4: Simplify right side
    247.02x = 50,632.32
  5. Step 5: Solve for x
    x = 50,632.32/247.02
  6. Step 6: Final answer
    x = 204.97

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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.