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Finding the Third Proportional to 520.17 and 1,117.55

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Solution

The third proportional to 520.17 and 1,117.55 is: 2,400.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.17 : 1,117.55 = 1,117.55 : x
  2. Step 2: Convert to fraction form
    520.17/1,117.55 = 1,117.55/x
  3. Step 3: Cross multiply
    520.17x = 1,117.55 × 1,117.55
  4. Step 4: Simplify right side
    520.17x = 1,248,911.02
  5. Step 5: Solve for x
    x = 1,248,911.02/520.17
  6. Step 6: Final answer
    x = 2,400.96

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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.