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Finding the Fourth Proportional to 247.03, 340.82 and 142.10

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Solution

The fourth proportional to 247.03, 340.82 and 142.10 is: 196.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.03 : 340.82 = 142.10 : x
  2. Step 2: Convert to fraction form
    247.03/340.82 = 142.10/x
  3. Step 3: Cross multiply
    247.03x = 340.82 × 142.10
  4. Step 4: Simplify right side
    247.03x = 48,430.52
  5. Step 5: Solve for x
    x = 48,430.52/247.03
  6. Step 6: Final answer
    x = 196.05

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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.