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Finding the Third Proportional to 145.88 and 268.69

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Solution

The third proportional to 145.88 and 268.69 is: 494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.88 : 268.69 = 268.69 : x
  2. Step 2: Convert to fraction form
    145.88/268.69 = 268.69/x
  3. Step 3: Cross multiply
    145.88x = 268.69 × 268.69
  4. Step 4: Simplify right side
    145.88x = 72,192.97
  5. Step 5: Solve for x
    x = 72,192.97/145.88
  6. Step 6: Final answer
    x = 494.90

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.