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Finding the Fourth Proportional to 367.86, 551.55 and 162.45

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Solution

The fourth proportional to 367.86, 551.55 and 162.45 is: 243.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.86 : 551.55 = 162.45 : x
  2. Step 2: Convert to fraction form
    367.86/551.55 = 162.45/x
  3. Step 3: Cross multiply
    367.86x = 551.55 × 162.45
  4. Step 4: Simplify right side
    367.86x = 89,599.30
  5. Step 5: Solve for x
    x = 89,599.30/367.86
  6. Step 6: Final answer
    x = 243.57

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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.