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Finding the Fourth Proportional to 317.20, 437.26 and 250.69

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Solution

The fourth proportional to 317.20, 437.26 and 250.69 is: 345.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.20 : 437.26 = 250.69 : x
  2. Step 2: Convert to fraction form
    317.20/437.26 = 250.69/x
  3. Step 3: Cross multiply
    317.20x = 437.26 × 250.69
  4. Step 4: Simplify right side
    317.20x = 109,616.71
  5. Step 5: Solve for x
    x = 109,616.71/317.20
  6. Step 6: Final answer
    x = 345.58

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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.