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Finding the Fourth Proportional to 263.66, 395.86 and 155.50

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Solution

The fourth proportional to 263.66, 395.86 and 155.50 is: 233.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.66 : 395.86 = 155.50 : x
  2. Step 2: Convert to fraction form
    263.66/395.86 = 155.50/x
  3. Step 3: Cross multiply
    263.66x = 395.86 × 155.50
  4. Step 4: Simplify right side
    263.66x = 61,556.23
  5. Step 5: Solve for x
    x = 61,556.23/263.66
  6. Step 6: Final answer
    x = 233.47

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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.