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Finding the Fourth Proportional to 442.18, 662.66 and 247.26

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Solution

The fourth proportional to 442.18, 662.66 and 247.26 is: 370.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.18 : 662.66 = 247.26 : x
  2. Step 2: Convert to fraction form
    442.18/662.66 = 247.26/x
  3. Step 3: Cross multiply
    442.18x = 662.66 × 247.26
  4. Step 4: Simplify right side
    442.18x = 163,849.31
  5. Step 5: Solve for x
    x = 163,849.31/442.18
  6. Step 6: Final answer
    x = 370.55

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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.