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Finding the Fourth Proportional to 407.35, 610.89 and 133.39

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Solution

The fourth proportional to 407.35, 610.89 and 133.39 is: 200.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.35 : 610.89 = 133.39 : x
  2. Step 2: Convert to fraction form
    407.35/610.89 = 133.39/x
  3. Step 3: Cross multiply
    407.35x = 610.89 × 133.39
  4. Step 4: Simplify right side
    407.35x = 81,486.62
  5. Step 5: Solve for x
    x = 81,486.62/407.35
  6. Step 6: Final answer
    x = 200.04

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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.