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Finding the Third Proportional to 531.25 and 1,256.13

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Solution

The third proportional to 531.25 and 1,256.13 is: 2,970.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.25 : 1,256.13 = 1,256.13 : x
  2. Step 2: Convert to fraction form
    531.25/1,256.13 = 1,256.13/x
  3. Step 3: Cross multiply
    531.25x = 1,256.13 × 1,256.13
  4. Step 4: Simplify right side
    531.25x = 1,577,850.02
  5. Step 5: Solve for x
    x = 1,577,850.02/531.25
  6. Step 6: Final answer
    x = 2,970.07

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.