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Finding the Third Proportional to 256.38 and 602.75

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Solution

The third proportional to 256.38 and 602.75 is: 1,417.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.38 : 602.75 = 602.75 : x
  2. Step 2: Convert to fraction form
    256.38/602.75 = 602.75/x
  3. Step 3: Cross multiply
    256.38x = 602.75 × 602.75
  4. Step 4: Simplify right side
    256.38x = 363,307.56
  5. Step 5: Solve for x
    x = 363,307.56/256.38
  6. Step 6: Final answer
    x = 1,417.09

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.