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Finding the Fourth Proportional to 415.35, 621.86 and 232.07

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Solution

The fourth proportional to 415.35, 621.86 and 232.07 is: 347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.35 : 621.86 = 232.07 : x
  2. Step 2: Convert to fraction form
    415.35/621.86 = 232.07/x
  3. Step 3: Cross multiply
    415.35x = 621.86 × 232.07
  4. Step 4: Simplify right side
    415.35x = 144,310.78
  5. Step 5: Solve for x
    x = 144,310.78/415.35
  6. Step 6: Final answer
    x = 347.44

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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.