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Finding the Fourth Proportional to 329.59, 493.85 and 283.72

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Solution

The fourth proportional to 329.59, 493.85 and 283.72 is: 425.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.59 : 493.85 = 283.72 : x
  2. Step 2: Convert to fraction form
    329.59/493.85 = 283.72/x
  3. Step 3: Cross multiply
    329.59x = 493.85 × 283.72
  4. Step 4: Simplify right side
    329.59x = 140,113.93
  5. Step 5: Solve for x
    x = 140,113.93/329.59
  6. Step 6: Final answer
    x = 425.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.