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Finding the Fourth Proportional to 367.92, 507.78 and 274.95

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Solution

The fourth proportional to 367.92, 507.78 and 274.95 is: 379.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.92 : 507.78 = 274.95 : x
  2. Step 2: Convert to fraction form
    367.92/507.78 = 274.95/x
  3. Step 3: Cross multiply
    367.92x = 507.78 × 274.95
  4. Step 4: Simplify right side
    367.92x = 139,614.11
  5. Step 5: Solve for x
    x = 139,614.11/367.92
  6. Step 6: Final answer
    x = 379.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.