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Finding the Third Proportional to 518.91 and 802.41

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Solution

The third proportional to 518.91 and 802.41 is: 1,240.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.91 : 802.41 = 802.41 : x
  2. Step 2: Convert to fraction form
    518.91/802.41 = 802.41/x
  3. Step 3: Cross multiply
    518.91x = 802.41 × 802.41
  4. Step 4: Simplify right side
    518.91x = 643,855.79
  5. Step 5: Solve for x
    x = 643,855.79/518.91
  6. Step 6: Final answer
    x = 1,240.79

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.