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Finding the Fourth Proportional to 169.98, 256.07 and 127.50

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Solution

The fourth proportional to 169.98, 256.07 and 127.50 is: 192.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.98 : 256.07 = 127.50 : x
  2. Step 2: Convert to fraction form
    169.98/256.07 = 127.50/x
  3. Step 3: Cross multiply
    169.98x = 256.07 × 127.50
  4. Step 4: Simplify right side
    169.98x = 32,648.29
  5. Step 5: Solve for x
    x = 32,648.29/169.98
  6. Step 6: Final answer
    x = 192.07

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.