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Finding the Fourth Proportional to 369.39, 554.07 and 112.89

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Solution

The fourth proportional to 369.39, 554.07 and 112.89 is: 169.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.39 : 554.07 = 112.89 : x
  2. Step 2: Convert to fraction form
    369.39/554.07 = 112.89/x
  3. Step 3: Cross multiply
    369.39x = 554.07 × 112.89
  4. Step 4: Simplify right side
    369.39x = 62,548.96
  5. Step 5: Solve for x
    x = 62,548.96/369.39
  6. Step 6: Final answer
    x = 169.33

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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.