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Finding the Fourth Proportional to 263.55, 395.23 and 153.90

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Solution

The fourth proportional to 263.55, 395.23 and 153.90 is: 230.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.55 : 395.23 = 153.90 : x
  2. Step 2: Convert to fraction form
    263.55/395.23 = 153.90/x
  3. Step 3: Cross multiply
    263.55x = 395.23 × 153.90
  4. Step 4: Simplify right side
    263.55x = 60,825.51
  5. Step 5: Solve for x
    x = 60,825.51/263.55
  6. Step 6: Final answer
    x = 230.79

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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.