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Finding the Fourth Proportional to 247.36, 371.10 and 74.02

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Solution

The fourth proportional to 247.36, 371.10 and 74.02 is: 111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.36 : 371.10 = 74.02 : x
  2. Step 2: Convert to fraction form
    247.36/371.10 = 74.02/x
  3. Step 3: Cross multiply
    247.36x = 371.10 × 74.02
  4. Step 4: Simplify right side
    247.36x = 27,468.82
  5. Step 5: Solve for x
    x = 27,468.82/247.36
  6. Step 6: Final answer
    x = 111.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.