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Finding the Third Proportional to 146.25 and 315.13

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Solution

The third proportional to 146.25 and 315.13 is: 679.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.25 : 315.13 = 315.13 : x
  2. Step 2: Convert to fraction form
    146.25/315.13 = 315.13/x
  3. Step 3: Cross multiply
    146.25x = 315.13 × 315.13
  4. Step 4: Simplify right side
    146.25x = 99,303.77
  5. Step 5: Solve for x
    x = 99,303.77/146.25
  6. Step 6: Final answer
    x = 679.00

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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.