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Finding the Fourth Proportional to 389.01, 580.94 and 367.95

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Solution

The fourth proportional to 389.01, 580.94 and 367.95 is: 549.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.01 : 580.94 = 367.95 : x
  2. Step 2: Convert to fraction form
    389.01/580.94 = 367.95/x
  3. Step 3: Cross multiply
    389.01x = 580.94 × 367.95
  4. Step 4: Simplify right side
    389.01x = 213,756.87
  5. Step 5: Solve for x
    x = 213,756.87/389.01
  6. Step 6: Final answer
    x = 549.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.