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Finding the Third Proportional to 130.25 and 292.50

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Solution

The third proportional to 130.25 and 292.50 is: 656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.25 : 292.50 = 292.50 : x
  2. Step 2: Convert to fraction form
    130.25/292.50 = 292.50/x
  3. Step 3: Cross multiply
    130.25x = 292.50 × 292.50
  4. Step 4: Simplify right side
    130.25x = 85,556.25
  5. Step 5: Solve for x
    x = 85,556.25/130.25
  6. Step 6: Final answer
    x = 656.86

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.