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Finding the Fourth Proportional to 369.98, 555 and 226.61

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Solution

The fourth proportional to 369.98, 555 and 226.61 is: 339.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.98 : 555 = 226.61 : x
  2. Step 2: Convert to fraction form
    369.98/555 = 226.61/x
  3. Step 3: Cross multiply
    369.98x = 555 × 226.61
  4. Step 4: Simplify right side
    369.98x = 125,768.55
  5. Step 5: Solve for x
    x = 125,768.55/369.98
  6. Step 6: Final answer
    x = 339.93

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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.