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Finding the Fourth Proportional to 317.64, 438.76 and 244.86

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Solution

The fourth proportional to 317.64, 438.76 and 244.86 is: 338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.64 : 438.76 = 244.86 : x
  2. Step 2: Convert to fraction form
    317.64/438.76 = 244.86/x
  3. Step 3: Cross multiply
    317.64x = 438.76 × 244.86
  4. Step 4: Simplify right side
    317.64x = 107,434.77
  5. Step 5: Solve for x
    x = 107,434.77/317.64
  6. Step 6: Final answer
    x = 338.23

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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.