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Finding the Third Proportional to 617.63 and 984.66

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Solution

The third proportional to 617.63 and 984.66 is: 1,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.63 : 984.66 = 984.66 : x
  2. Step 2: Convert to fraction form
    617.63/984.66 = 984.66/x
  3. Step 3: Cross multiply
    617.63x = 984.66 × 984.66
  4. Step 4: Simplify right side
    617.63x = 969,547.93
  5. Step 5: Solve for x
    x = 969,547.93/617.63
  6. Step 6: Final answer
    x = 1,569.80

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.