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Finding the Third Proportional to 248.91 and 535.31

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Solution

The third proportional to 248.91 and 535.31 is: 1,151.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.91 : 535.31 = 535.31 : x
  2. Step 2: Convert to fraction form
    248.91/535.31 = 535.31/x
  3. Step 3: Cross multiply
    248.91x = 535.31 × 535.31
  4. Step 4: Simplify right side
    248.91x = 286,559.47
  5. Step 5: Solve for x
    x = 286,559.47/248.91
  6. Step 6: Final answer
    x = 1,151.27

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.