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Finding the Fourth Proportional to 408.04, 609.18 and 369.76

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Solution

The fourth proportional to 408.04, 609.18 and 369.76 is: 552.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.04 : 609.18 = 369.76 : x
  2. Step 2: Convert to fraction form
    408.04/609.18 = 369.76/x
  3. Step 3: Cross multiply
    408.04x = 609.18 × 369.76
  4. Step 4: Simplify right side
    408.04x = 225,250.40
  5. Step 5: Solve for x
    x = 225,250.40/408.04
  6. Step 6: Final answer
    x = 552.03

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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.