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Finding the Fourth Proportional to 235.19, 352.69 and 143.93

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Solution

The fourth proportional to 235.19, 352.69 and 143.93 is: 215.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.19 : 352.69 = 143.93 : x
  2. Step 2: Convert to fraction form
    235.19/352.69 = 143.93/x
  3. Step 3: Cross multiply
    235.19x = 352.69 × 143.93
  4. Step 4: Simplify right side
    235.19x = 50,763.19
  5. Step 5: Solve for x
    x = 50,763.19/235.19
  6. Step 6: Final answer
    x = 215.84

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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.