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Finding the Fourth Proportional to 369.16, 553.42 and 141

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Solution

The fourth proportional to 369.16, 553.42 and 141 is: 211.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.16 : 553.42 = 141 : x
  2. Step 2: Convert to fraction form
    369.16/553.42 = 141/x
  3. Step 3: Cross multiply
    369.16x = 553.42 × 141
  4. Step 4: Simplify right side
    369.16x = 78,032.22
  5. Step 5: Solve for x
    x = 78,032.22/369.16
  6. Step 6: Final answer
    x = 211.38

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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.