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Finding the Fourth Proportional to 247.28, 341.16 and 149.00

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Solution

The fourth proportional to 247.28, 341.16 and 149.00 is: 205.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.28 : 341.16 = 149.00 : x
  2. Step 2: Convert to fraction form
    247.28/341.16 = 149.00/x
  3. Step 3: Cross multiply
    247.28x = 341.16 × 149.00
  4. Step 4: Simplify right side
    247.28x = 50,831.13
  5. Step 5: Solve for x
    x = 50,831.13/247.28
  6. Step 6: Final answer
    x = 205.57

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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.