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Finding the Third Proportional to 145.41 and 272.81

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Solution

The third proportional to 145.41 and 272.81 is: 511.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.41 : 272.81 = 272.81 : x
  2. Step 2: Convert to fraction form
    145.41/272.81 = 272.81/x
  3. Step 3: Cross multiply
    145.41x = 272.81 × 272.81
  4. Step 4: Simplify right side
    145.41x = 74,426.66
  5. Step 5: Solve for x
    x = 74,426.66/145.41
  6. Step 6: Final answer
    x = 511.85

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.