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Finding the Fourth Proportional to 263.48, 395.51 and 155.34

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Solution

The fourth proportional to 263.48, 395.51 and 155.34 is: 233.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.48 : 395.51 = 155.34 : x
  2. Step 2: Convert to fraction form
    263.48/395.51 = 155.34/x
  3. Step 3: Cross multiply
    263.48x = 395.51 × 155.34
  4. Step 4: Simplify right side
    263.48x = 61,437.75
  5. Step 5: Solve for x
    x = 61,437.75/263.48
  6. Step 6: Final answer
    x = 233.18

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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.