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Finding the Third Proportional to 313.75 and 465.88

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Solution

The third proportional to 313.75 and 465.88 is: 691.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.75 : 465.88 = 465.88 : x
  2. Step 2: Convert to fraction form
    313.75/465.88 = 465.88/x
  3. Step 3: Cross multiply
    313.75x = 465.88 × 465.88
  4. Step 4: Simplify right side
    313.75x = 217,039.52
  5. Step 5: Solve for x
    x = 217,039.52/313.75
  6. Step 6: Final answer
    x = 691.76

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.