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Finding the Fourth Proportional to 155.88, 234.96 and 153.45

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Solution

The fourth proportional to 155.88, 234.96 and 153.45 is: 231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.88 : 234.96 = 153.45 : x
  2. Step 2: Convert to fraction form
    155.88/234.96 = 153.45/x
  3. Step 3: Cross multiply
    155.88x = 234.96 × 153.45
  4. Step 4: Simplify right side
    155.88x = 36,054.61
  5. Step 5: Solve for x
    x = 36,054.61/155.88
  6. Step 6: Final answer
    x = 231.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.