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Finding the Third Proportional to 345.38 and 528.19

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Solution

The third proportional to 345.38 and 528.19 is: 807.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.38 : 528.19 = 528.19 : x
  2. Step 2: Convert to fraction form
    345.38/528.19 = 528.19/x
  3. Step 3: Cross multiply
    345.38x = 528.19 × 528.19
  4. Step 4: Simplify right side
    345.38x = 278,982.04
  5. Step 5: Solve for x
    x = 278,982.04/345.38
  6. Step 6: Final answer
    x = 807.77

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.