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Finding the Third Proportional to 284.77 and 613.20

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Solution

The third proportional to 284.77 and 613.20 is: 1,320.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.77 : 613.20 = 613.20 : x
  2. Step 2: Convert to fraction form
    284.77/613.20 = 613.20/x
  3. Step 3: Cross multiply
    284.77x = 613.20 × 613.20
  4. Step 4: Simplify right side
    284.77x = 376,008.49
  5. Step 5: Solve for x
    x = 376,008.49/284.77
  6. Step 6: Final answer
    x = 1,320.41

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.