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Finding the Third Proportional to 909.84 and 1,358.86

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Solution

The third proportional to 909.84 and 1,358.86 is: 2,029.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.84 : 1,358.86 = 1,358.86 : x
  2. Step 2: Convert to fraction form
    909.84/1,358.86 = 1,358.86/x
  3. Step 3: Cross multiply
    909.84x = 1,358.86 × 1,358.86
  4. Step 4: Simplify right side
    909.84x = 1,846,498.80
  5. Step 5: Solve for x
    x = 1,846,498.80/909.84
  6. Step 6: Final answer
    x = 2,029.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.