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Finding the Fourth Proportional to 290.91, 435.89 and 124.01

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Solution

The fourth proportional to 290.91, 435.89 and 124.01 is: 185.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.91 : 435.89 = 124.01 : x
  2. Step 2: Convert to fraction form
    290.91/435.89 = 124.01/x
  3. Step 3: Cross multiply
    290.91x = 435.89 × 124.01
  4. Step 4: Simplify right side
    290.91x = 54,052.85
  5. Step 5: Solve for x
    x = 54,052.85/290.91
  6. Step 6: Final answer
    x = 185.81

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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.