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Finding the Fourth Proportional to 403.24, 604.19 and 388.06

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Solution

The fourth proportional to 403.24, 604.19 and 388.06 is: 581.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.24 : 604.19 = 388.06 : x
  2. Step 2: Convert to fraction form
    403.24/604.19 = 388.06/x
  3. Step 3: Cross multiply
    403.24x = 604.19 × 388.06
  4. Step 4: Simplify right side
    403.24x = 234,458.52
  5. Step 5: Solve for x
    x = 234,458.52/403.24
  6. Step 6: Final answer
    x = 581.44

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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.