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Finding the Fourth Proportional to 317.56, 437.94 and 243.88

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Solution

The fourth proportional to 317.56, 437.94 and 243.88 is: 336.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.56 : 437.94 = 243.88 : x
  2. Step 2: Convert to fraction form
    317.56/437.94 = 243.88/x
  3. Step 3: Cross multiply
    317.56x = 437.94 × 243.88
  4. Step 4: Simplify right side
    317.56x = 106,804.81
  5. Step 5: Solve for x
    x = 106,804.81/317.56
  6. Step 6: Final answer
    x = 336.33

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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.