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Finding the Fourth Proportional to 415.07, 621.77 and 250.44

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Solution

The fourth proportional to 415.07, 621.77 and 250.44 is: 375.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.07 : 621.77 = 250.44 : x
  2. Step 2: Convert to fraction form
    415.07/621.77 = 250.44/x
  3. Step 3: Cross multiply
    415.07x = 621.77 × 250.44
  4. Step 4: Simplify right side
    415.07x = 155,717.63
  5. Step 5: Solve for x
    x = 155,717.63/415.07
  6. Step 6: Final answer
    x = 375.16

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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.