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Finding the Fourth Proportional to 264.15, 393.59 and 235.42

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Solution

The fourth proportional to 264.15, 393.59 and 235.42 is: 350.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.15 : 393.59 = 235.42 : x
  2. Step 2: Convert to fraction form
    264.15/393.59 = 235.42/x
  3. Step 3: Cross multiply
    264.15x = 393.59 × 235.42
  4. Step 4: Simplify right side
    264.15x = 92,658.56
  5. Step 5: Solve for x
    x = 92,658.56/264.15
  6. Step 6: Final answer
    x = 350.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.