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Finding the Fourth Proportional to 438.60, 605.27 and 252.08

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Solution

The fourth proportional to 438.60, 605.27 and 252.08 is: 347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.60 : 605.27 = 252.08 : x
  2. Step 2: Convert to fraction form
    438.60/605.27 = 252.08/x
  3. Step 3: Cross multiply
    438.60x = 605.27 × 252.08
  4. Step 4: Simplify right side
    438.60x = 152,576.46
  5. Step 5: Solve for x
    x = 152,576.46/438.60
  6. Step 6: Final answer
    x = 347.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.