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Finding the Fourth Proportional to 403.70, 604.74 and 369.86

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Solution

The fourth proportional to 403.70, 604.74 and 369.86 is: 554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.70 : 604.74 = 369.86 : x
  2. Step 2: Convert to fraction form
    403.70/604.74 = 369.86/x
  3. Step 3: Cross multiply
    403.70x = 604.74 × 369.86
  4. Step 4: Simplify right side
    403.70x = 223,669.14
  5. Step 5: Solve for x
    x = 223,669.14/403.70
  6. Step 6: Final answer
    x = 554.05

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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.