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Finding the Fourth Proportional to 288.91, 398.43 and 244.75

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Solution

The fourth proportional to 288.91, 398.43 and 244.75 is: 337.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.91 : 398.43 = 244.75 : x
  2. Step 2: Convert to fraction form
    288.91/398.43 = 244.75/x
  3. Step 3: Cross multiply
    288.91x = 398.43 × 244.75
  4. Step 4: Simplify right side
    288.91x = 97,515.74
  5. Step 5: Solve for x
    x = 97,515.74/288.91
  6. Step 6: Final answer
    x = 337.53

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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.