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Finding the Fourth Proportional to 442.19, 608.87 and 348.90

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Solution

The fourth proportional to 442.19, 608.87 and 348.90 is: 480.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.19 : 608.87 = 348.90 : x
  2. Step 2: Convert to fraction form
    442.19/608.87 = 348.90/x
  3. Step 3: Cross multiply
    442.19x = 608.87 × 348.90
  4. Step 4: Simplify right side
    442.19x = 212,436.57
  5. Step 5: Solve for x
    x = 212,436.57/442.19
  6. Step 6: Final answer
    x = 480.42

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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.