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Finding the Third Proportional to 264.38 and 388.13

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Solution

The third proportional to 264.38 and 388.13 is: 569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.38 : 388.13 = 388.13 : x
  2. Step 2: Convert to fraction form
    264.38/388.13 = 388.13/x
  3. Step 3: Cross multiply
    264.38x = 388.13 × 388.13
  4. Step 4: Simplify right side
    264.38x = 150,641.02
  5. Step 5: Solve for x
    x = 150,641.02/264.38
  6. Step 6: Final answer
    x = 569.80

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.