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Finding the Fourth Proportional to 372.06, 557.57 and 207.61

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Solution

The fourth proportional to 372.06, 557.57 and 207.61 is: 311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.06 : 557.57 = 207.61 : x
  2. Step 2: Convert to fraction form
    372.06/557.57 = 207.61/x
  3. Step 3: Cross multiply
    372.06x = 557.57 × 207.61
  4. Step 4: Simplify right side
    372.06x = 115,756.23
  5. Step 5: Solve for x
    x = 115,756.23/372.06
  6. Step 6: Final answer
    x = 311.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.