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Finding the Fourth Proportional to 247.34, 371.02 and 84.98

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Solution

The fourth proportional to 247.34, 371.02 and 84.98 is: 127.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.34 : 371.02 = 84.98 : x
  2. Step 2: Convert to fraction form
    247.34/371.02 = 84.98/x
  3. Step 3: Cross multiply
    247.34x = 371.02 × 84.98
  4. Step 4: Simplify right side
    247.34x = 31,529.28
  5. Step 5: Solve for x
    x = 31,529.28/247.34
  6. Step 6: Final answer
    x = 127.47

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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.