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Finding the Fourth Proportional to 329.08, 493.26 and 207.40

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Solution

The fourth proportional to 329.08, 493.26 and 207.40 is: 310.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.08 : 493.26 = 207.40 : x
  2. Step 2: Convert to fraction form
    329.08/493.26 = 207.40/x
  3. Step 3: Cross multiply
    329.08x = 493.26 × 207.40
  4. Step 4: Simplify right side
    329.08x = 102,302.12
  5. Step 5: Solve for x
    x = 102,302.12/329.08
  6. Step 6: Final answer
    x = 310.87

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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.