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Finding the Fourth Proportional to 317.63, 437.96 and 247.61

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Solution

The fourth proportional to 317.63, 437.96 and 247.61 is: 341.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.63 : 437.96 = 247.61 : x
  2. Step 2: Convert to fraction form
    317.63/437.96 = 247.61/x
  3. Step 3: Cross multiply
    317.63x = 437.96 × 247.61
  4. Step 4: Simplify right side
    317.63x = 108,442.04
  5. Step 5: Solve for x
    x = 108,442.04/317.63
  6. Step 6: Final answer
    x = 341.41

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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.