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Finding the Third Proportional to 30.13 and 62.40

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Solution

The third proportional to 30.13 and 62.40 is: 129.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.13 : 62.40 = 62.40 : x
  2. Step 2: Convert to fraction form
    30.13/62.40 = 62.40/x
  3. Step 3: Cross multiply
    30.13x = 62.40 × 62.40
  4. Step 4: Simplify right side
    30.13x = 3,894.05
  5. Step 5: Solve for x
    x = 3,894.05/30.13
  6. Step 6: Final answer
    x = 129.25

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.