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Finding the Fourth Proportional to 415.90, 624.15 and 233.10

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Solution

The fourth proportional to 415.90, 624.15 and 233.10 is: 349.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.90 : 624.15 = 233.10 : x
  2. Step 2: Convert to fraction form
    415.90/624.15 = 233.10/x
  3. Step 3: Cross multiply
    415.90x = 624.15 × 233.10
  4. Step 4: Simplify right side
    415.90x = 145,489.37
  5. Step 5: Solve for x
    x = 145,489.37/415.90
  6. Step 6: Final answer
    x = 349.82

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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.