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Finding the Third Proportional to 479.57 and 740.60

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Solution

The third proportional to 479.57 and 740.60 is: 1,143.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.57 : 740.60 = 740.60 : x
  2. Step 2: Convert to fraction form
    479.57/740.60 = 740.60/x
  3. Step 3: Cross multiply
    479.57x = 740.60 × 740.60
  4. Step 4: Simplify right side
    479.57x = 548,490.67
  5. Step 5: Solve for x
    x = 548,490.67/479.57
  6. Step 6: Final answer
    x = 1,143.72

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.