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Finding the Fourth Proportional to 438.83, 605.69 and 252.42

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Solution

The fourth proportional to 438.83, 605.69 and 252.42 is: 348.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.83 : 605.69 = 252.42 : x
  2. Step 2: Convert to fraction form
    438.83/605.69 = 252.42/x
  3. Step 3: Cross multiply
    438.83x = 605.69 × 252.42
  4. Step 4: Simplify right side
    438.83x = 152,888.27
  5. Step 5: Solve for x
    x = 152,888.27/438.83
  6. Step 6: Final answer
    x = 348.40

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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.