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Finding the Fourth Proportional to 155.50, 233.21 and 47.26

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Solution

The fourth proportional to 155.50, 233.21 and 47.26 is: 70.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.50 : 233.21 = 47.26 : x
  2. Step 2: Convert to fraction form
    155.50/233.21 = 47.26/x
  3. Step 3: Cross multiply
    155.50x = 233.21 × 47.26
  4. Step 4: Simplify right side
    155.50x = 11,021.50
  5. Step 5: Solve for x
    x = 11,021.50/155.50
  6. Step 6: Final answer
    x = 70.88

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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.