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Finding the Fourth Proportional to 443.67, 611.91 and 369.87

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Solution

The fourth proportional to 443.67, 611.91 and 369.87 is: 510.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.67 : 611.91 = 369.87 : x
  2. Step 2: Convert to fraction form
    443.67/611.91 = 369.87/x
  3. Step 3: Cross multiply
    443.67x = 611.91 × 369.87
  4. Step 4: Simplify right side
    443.67x = 226,327.15
  5. Step 5: Solve for x
    x = 226,327.15/443.67
  6. Step 6: Final answer
    x = 510.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.