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Finding the Fourth Proportional to 371.30, 512.60 and 247.12

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Solution

The fourth proportional to 371.30, 512.60 and 247.12 is: 341.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.30 : 512.60 = 247.12 : x
  2. Step 2: Convert to fraction form
    371.30/512.60 = 247.12/x
  3. Step 3: Cross multiply
    371.30x = 512.60 × 247.12
  4. Step 4: Simplify right side
    371.30x = 126,673.71
  5. Step 5: Solve for x
    x = 126,673.71/371.30
  6. Step 6: Final answer
    x = 341.16

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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.