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Finding the Third Proportional to 479.06 and 890.91

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Solution

The third proportional to 479.06 and 890.91 is: 1,656.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.06 : 890.91 = 890.91 : x
  2. Step 2: Convert to fraction form
    479.06/890.91 = 890.91/x
  3. Step 3: Cross multiply
    479.06x = 890.91 × 890.91
  4. Step 4: Simplify right side
    479.06x = 793,713.95
  5. Step 5: Solve for x
    x = 793,713.95/479.06
  6. Step 6: Final answer
    x = 1,656.81

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.