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Finding the Fourth Proportional to 437.67, 655.21 and 383.67

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Solution

The fourth proportional to 437.67, 655.21 and 383.67 is: 574.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.67 : 655.21 = 383.67 : x
  2. Step 2: Convert to fraction form
    437.67/655.21 = 383.67/x
  3. Step 3: Cross multiply
    437.67x = 655.21 × 383.67
  4. Step 4: Simplify right side
    437.67x = 251,384.42
  5. Step 5: Solve for x
    x = 251,384.42/437.67
  6. Step 6: Final answer
    x = 574.37

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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.