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Finding the Fourth Proportional to 295.90, 443.70 and 174.20

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Solution

The fourth proportional to 295.90, 443.70 and 174.20 is: 261.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.90 : 443.70 = 174.20 : x
  2. Step 2: Convert to fraction form
    295.90/443.70 = 174.20/x
  3. Step 3: Cross multiply
    295.90x = 443.70 × 174.20
  4. Step 4: Simplify right side
    295.90x = 77,292.54
  5. Step 5: Solve for x
    x = 77,292.54/295.90
  6. Step 6: Final answer
    x = 261.21

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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.