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Finding the Fourth Proportional to 127.31, 175.67 and 94.50

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Solution

The fourth proportional to 127.31, 175.67 and 94.50 is: 130.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.31 : 175.67 = 94.50 : x
  2. Step 2: Convert to fraction form
    127.31/175.67 = 94.50/x
  3. Step 3: Cross multiply
    127.31x = 175.67 × 94.50
  4. Step 4: Simplify right side
    127.31x = 16,600.34
  5. Step 5: Solve for x
    x = 16,600.34/127.31
  6. Step 6: Final answer
    x = 130.40

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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.