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Finding the Third Proportional to 551.75 and 974.50

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Solution

The third proportional to 551.75 and 974.50 is: 1,721.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.75 : 974.50 = 974.50 : x
  2. Step 2: Convert to fraction form
    551.75/974.50 = 974.50/x
  3. Step 3: Cross multiply
    551.75x = 974.50 × 974.50
  4. Step 4: Simplify right side
    551.75x = 949,650.25
  5. Step 5: Solve for x
    x = 949,650.25/551.75
  6. Step 6: Final answer
    x = 1,721.16

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.