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Finding the Third Proportional to 531.75 and 1,297.88

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Solution

The third proportional to 531.75 and 1,297.88 is: 3,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.75 : 1,297.88 = 1,297.88 : x
  2. Step 2: Convert to fraction form
    531.75/1,297.88 = 1,297.88/x
  3. Step 3: Cross multiply
    531.75x = 1,297.88 × 1,297.88
  4. Step 4: Simplify right side
    531.75x = 1,684,479.52
  5. Step 5: Solve for x
    x = 1,684,479.52/531.75
  6. Step 6: Final answer
    x = 3,167.80

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Why These Related Problems?

These problems maintain the same ratio (2.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.