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Finding the Fourth Proportional to 369.70, 554.05 and 187.22

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Solution

The fourth proportional to 369.70, 554.05 and 187.22 is: 280.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.70 : 554.05 = 187.22 : x
  2. Step 2: Convert to fraction form
    369.70/554.05 = 187.22/x
  3. Step 3: Cross multiply
    369.70x = 554.05 × 187.22
  4. Step 4: Simplify right side
    369.70x = 103,729.24
  5. Step 5: Solve for x
    x = 103,729.24/369.70
  6. Step 6: Final answer
    x = 280.58

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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.