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Finding the Third Proportional to 55.88 and 74.63

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Solution

The third proportional to 55.88 and 74.63 is: 99.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.88 : 74.63 = 74.63 : x
  2. Step 2: Convert to fraction form
    55.88/74.63 = 74.63/x
  3. Step 3: Cross multiply
    55.88x = 74.63 × 74.63
  4. Step 4: Simplify right side
    55.88x = 5,568.89
  5. Step 5: Solve for x
    x = 5,568.89/55.88
  6. Step 6: Final answer
    x = 99.67

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.