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Finding the Third Proportional to 243.88 and 530.88

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Solution

The third proportional to 243.88 and 530.88 is: 1,155.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.88 : 530.88 = 530.88 : x
  2. Step 2: Convert to fraction form
    243.88/530.88 = 530.88/x
  3. Step 3: Cross multiply
    243.88x = 530.88 × 530.88
  4. Step 4: Simplify right side
    243.88x = 281,828.27
  5. Step 5: Solve for x
    x = 281,828.27/243.88
  6. Step 6: Final answer
    x = 1,155.63

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.