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Finding the Fourth Proportional to 235.10, 352.65 and 143.83

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Solution

The fourth proportional to 235.10, 352.65 and 143.83 is: 215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.10 : 352.65 = 143.83 : x
  2. Step 2: Convert to fraction form
    235.10/352.65 = 143.83/x
  3. Step 3: Cross multiply
    235.10x = 352.65 × 143.83
  4. Step 4: Simplify right side
    235.10x = 50,720.65
  5. Step 5: Solve for x
    x = 50,720.65/235.10
  6. Step 6: Final answer
    x = 215.74

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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.