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Finding the Fourth Proportional to 263.97, 364.32 and 153.45

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Solution

The fourth proportional to 263.97, 364.32 and 153.45 is: 211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.97 : 364.32 = 153.45 : x
  2. Step 2: Convert to fraction form
    263.97/364.32 = 153.45/x
  3. Step 3: Cross multiply
    263.97x = 364.32 × 153.45
  4. Step 4: Simplify right side
    263.97x = 55,904.90
  5. Step 5: Solve for x
    x = 55,904.90/263.97
  6. Step 6: Final answer
    x = 211.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.