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Finding the Third Proportional to 53.16 and 72.56

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Solution

The third proportional to 53.16 and 72.56 is: 99.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.16 : 72.56 = 72.56 : x
  2. Step 2: Convert to fraction form
    53.16/72.56 = 72.56/x
  3. Step 3: Cross multiply
    53.16x = 72.56 × 72.56
  4. Step 4: Simplify right side
    53.16x = 5,265.32
  5. Step 5: Solve for x
    x = 5,265.32/53.16
  6. Step 6: Final answer
    x = 99.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.