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Finding the Third Proportional to 370.38 and 580.38

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Solution

The third proportional to 370.38 and 580.38 is: 909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.38 : 580.38 = 580.38 : x
  2. Step 2: Convert to fraction form
    370.38/580.38 = 580.38/x
  3. Step 3: Cross multiply
    370.38x = 580.38 × 580.38
  4. Step 4: Simplify right side
    370.38x = 336,835.14
  5. Step 5: Solve for x
    x = 336,835.14/370.38
  6. Step 6: Final answer
    x = 909.44

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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.