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Finding the Fourth Proportional to 493.28, 679.97 and 368.75

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Solution

The fourth proportional to 493.28, 679.97 and 368.75 is: 508.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.28 : 679.97 = 368.75 : x
  2. Step 2: Convert to fraction form
    493.28/679.97 = 368.75/x
  3. Step 3: Cross multiply
    493.28x = 679.97 × 368.75
  4. Step 4: Simplify right side
    493.28x = 250,738.94
  5. Step 5: Solve for x
    x = 250,738.94/493.28
  6. Step 6: Final answer
    x = 508.31

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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.