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Finding the Third Proportional to 1,478.50 and 2,320

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Solution

The third proportional to 1,478.50 and 2,320 is: 3,640.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.50 : 2,320 = 2,320 : x
  2. Step 2: Convert to fraction form
    1,478.50/2,320 = 2,320/x
  3. Step 3: Cross multiply
    1,478.50x = 2,320 × 2,320
  4. Step 4: Simplify right side
    1,478.50x = 5,382,400
  5. Step 5: Solve for x
    x = 5,382,400/1,478.50
  6. Step 6: Final answer
    x = 3,640.45

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.