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Finding the Fourth Proportional to 403.70, 604.76 and 360.80

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Solution

The fourth proportional to 403.70, 604.76 and 360.80 is: 540.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.70 : 604.76 = 360.80 : x
  2. Step 2: Convert to fraction form
    403.70/604.76 = 360.80/x
  3. Step 3: Cross multiply
    403.70x = 604.76 × 360.80
  4. Step 4: Simplify right side
    403.70x = 218,197.41
  5. Step 5: Solve for x
    x = 218,197.41/403.70
  6. Step 6: Final answer
    x = 540.49

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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.