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Finding the Fourth Proportional to 447.08, 670.76 and 369.69

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Solution

The fourth proportional to 447.08, 670.76 and 369.69 is: 554.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.08 : 670.76 = 369.69 : x
  2. Step 2: Convert to fraction form
    447.08/670.76 = 369.69/x
  3. Step 3: Cross multiply
    447.08x = 670.76 × 369.69
  4. Step 4: Simplify right side
    447.08x = 247,971.42
  5. Step 5: Solve for x
    x = 247,971.42/447.08
  6. Step 6: Final answer
    x = 554.65

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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.