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Finding the Third Proportional to 240.66 and 521.53

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Solution

The third proportional to 240.66 and 521.53 is: 1,130.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.66 : 521.53 = 521.53 : x
  2. Step 2: Convert to fraction form
    240.66/521.53 = 521.53/x
  3. Step 3: Cross multiply
    240.66x = 521.53 × 521.53
  4. Step 4: Simplify right side
    240.66x = 271,994.84
  5. Step 5: Solve for x
    x = 271,994.84/240.66
  6. Step 6: Final answer
    x = 1,130.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.