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Finding the Fourth Proportional to 369.62, 554.26 and 215.58

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Solution

The fourth proportional to 369.62, 554.26 and 215.58 is: 323.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.62 : 554.26 = 215.58 : x
  2. Step 2: Convert to fraction form
    369.62/554.26 = 215.58/x
  3. Step 3: Cross multiply
    369.62x = 554.26 × 215.58
  4. Step 4: Simplify right side
    369.62x = 119,487.37
  5. Step 5: Solve for x
    x = 119,487.37/369.62
  6. Step 6: Final answer
    x = 323.27

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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.