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Finding the Fourth Proportional to 317.14, 437.67 and 206.91

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Solution

The fourth proportional to 317.14, 437.67 and 206.91 is: 285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.14 : 437.67 = 206.91 : x
  2. Step 2: Convert to fraction form
    317.14/437.67 = 206.91/x
  3. Step 3: Cross multiply
    317.14x = 437.67 × 206.91
  4. Step 4: Simplify right side
    317.14x = 90,558.30
  5. Step 5: Solve for x
    x = 90,558.30/317.14
  6. Step 6: Final answer
    x = 285.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.