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Finding the Fourth Proportional to 493.17, 679.88 and 335.55

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Solution

The fourth proportional to 493.17, 679.88 and 335.55 is: 462.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.17 : 679.88 = 335.55 : x
  2. Step 2: Convert to fraction form
    493.17/679.88 = 335.55/x
  3. Step 3: Cross multiply
    493.17x = 679.88 × 335.55
  4. Step 4: Simplify right side
    493.17x = 228,137.12
  5. Step 5: Solve for x
    x = 228,137.12/493.17
  6. Step 6: Final answer
    x = 462.60

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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.