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Finding the Third Proportional to 58.85 and 127.20

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Solution

The third proportional to 58.85 and 127.20 is: 274.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.85 : 127.20 = 127.20 : x
  2. Step 2: Convert to fraction form
    58.85/127.20 = 127.20/x
  3. Step 3: Cross multiply
    58.85x = 127.20 × 127.20
  4. Step 4: Simplify right side
    58.85x = 16,178.65
  5. Step 5: Solve for x
    x = 16,178.65/58.85
  6. Step 6: Final answer
    x = 274.91

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.