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Finding the Third Proportional to 317.81 and 700.88

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Solution

The third proportional to 317.81 and 700.88 is: 1,545.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.81 : 700.88 = 700.88 : x
  2. Step 2: Convert to fraction form
    317.81/700.88 = 700.88/x
  3. Step 3: Cross multiply
    317.81x = 700.88 × 700.88
  4. Step 4: Simplify right side
    317.81x = 491,225.77
  5. Step 5: Solve for x
    x = 491,225.77/317.81
  6. Step 6: Final answer
    x = 1,545.65

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.