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Finding the Fourth Proportional to 290.91, 435.96 and 160.70

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Solution

The fourth proportional to 290.91, 435.96 and 160.70 is: 240.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.91 : 435.96 = 160.70 : x
  2. Step 2: Convert to fraction form
    290.91/435.96 = 160.70/x
  3. Step 3: Cross multiply
    290.91x = 435.96 × 160.70
  4. Step 4: Simplify right side
    290.91x = 70,059.86
  5. Step 5: Solve for x
    x = 70,059.86/290.91
  6. Step 6: Final answer
    x = 240.83

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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.