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Finding the Third Proportional to 578.16 and 1,240.03

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Solution

The third proportional to 578.16 and 1,240.03 is: 2,659.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.16 : 1,240.03 = 1,240.03 : x
  2. Step 2: Convert to fraction form
    578.16/1,240.03 = 1,240.03/x
  3. Step 3: Cross multiply
    578.16x = 1,240.03 × 1,240.03
  4. Step 4: Simplify right side
    578.16x = 1,537,677.50
  5. Step 5: Solve for x
    x = 1,537,677.50/578.16
  6. Step 6: Final answer
    x = 2,659.62

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.