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Finding the Third Proportional to 278.60 and 602.75

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Solution

The third proportional to 278.60 and 602.75 is: 1,304.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.60 : 602.75 = 602.75 : x
  2. Step 2: Convert to fraction form
    278.60/602.75 = 602.75/x
  3. Step 3: Cross multiply
    278.60x = 602.75 × 602.75
  4. Step 4: Simplify right side
    278.60x = 363,312.27
  5. Step 5: Solve for x
    x = 363,312.27/278.60
  6. Step 6: Final answer
    x = 1,304.08

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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.