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Finding the Fourth Proportional to 290.91, 401.50 and 174.49

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Solution

The fourth proportional to 290.91, 401.50 and 174.49 is: 240.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.91 : 401.50 = 174.49 : x
  2. Step 2: Convert to fraction form
    290.91/401.50 = 174.49/x
  3. Step 3: Cross multiply
    290.91x = 401.50 × 174.49
  4. Step 4: Simplify right side
    290.91x = 70,057.74
  5. Step 5: Solve for x
    x = 70,057.74/290.91
  6. Step 6: Final answer
    x = 240.82

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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.