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Finding the Fourth Proportional to 265.87, 398.04 and 235.81

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Solution

The fourth proportional to 265.87, 398.04 and 235.81 is: 353.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.87 : 398.04 = 235.81 : x
  2. Step 2: Convert to fraction form
    265.87/398.04 = 235.81/x
  3. Step 3: Cross multiply
    265.87x = 398.04 × 235.81
  4. Step 4: Simplify right side
    265.87x = 93,861.81
  5. Step 5: Solve for x
    x = 93,861.81/265.87
  6. Step 6: Final answer
    x = 353.04

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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.