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Finding the Fourth Proportional to 235.02, 324.32 and 147.69

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Solution

The fourth proportional to 235.02, 324.32 and 147.69 is: 203.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.02 : 324.32 = 147.69 : x
  2. Step 2: Convert to fraction form
    235.02/324.32 = 147.69/x
  3. Step 3: Cross multiply
    235.02x = 324.32 × 147.69
  4. Step 4: Simplify right side
    235.02x = 47,898.82
  5. Step 5: Solve for x
    x = 47,898.82/235.02
  6. Step 6: Final answer
    x = 203.81

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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.