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Finding the Fourth Proportional to 369.28, 553.80 and 174.22

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Solution

The fourth proportional to 369.28, 553.80 and 174.22 is: 261.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.28 : 553.80 = 174.22 : x
  2. Step 2: Convert to fraction form
    369.28/553.80 = 174.22/x
  3. Step 3: Cross multiply
    369.28x = 553.80 × 174.22
  4. Step 4: Simplify right side
    369.28x = 96,483.04
  5. Step 5: Solve for x
    x = 96,483.04/369.28
  6. Step 6: Final answer
    x = 261.27

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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.