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Finding the Fourth Proportional to 671.98, 1,008.05 and 233.11

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Solution

The fourth proportional to 671.98, 1,008.05 and 233.11 is: 349.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.98 : 1,008.05 = 233.11 : x
  2. Step 2: Convert to fraction form
    671.98/1,008.05 = 233.11/x
  3. Step 3: Cross multiply
    671.98x = 1,008.05 × 233.11
  4. Step 4: Simplify right side
    671.98x = 234,981.50
  5. Step 5: Solve for x
    x = 234,981.50/671.98
  6. Step 6: Final answer
    x = 349.69

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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.