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Finding the Third Proportional to 56.95 and 127.20

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Solution

The third proportional to 56.95 and 127.20 is: 284.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.95 : 127.20 = 127.20 : x
  2. Step 2: Convert to fraction form
    56.95/127.20 = 127.20/x
  3. Step 3: Cross multiply
    56.95x = 127.20 × 127.20
  4. Step 4: Simplify right side
    56.95x = 16,178.65
  5. Step 5: Solve for x
    x = 16,178.65/56.95
  6. Step 6: Final answer
    x = 284.07

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.