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Finding the Fourth Proportional to 437.37, 654.89 and 385.47

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Solution

The fourth proportional to 437.37, 654.89 and 385.47 is: 577.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.37 : 654.89 = 385.47 : x
  2. Step 2: Convert to fraction form
    437.37/654.89 = 385.47/x
  3. Step 3: Cross multiply
    437.37x = 654.89 × 385.47
  4. Step 4: Simplify right side
    437.37x = 252,438.52
  5. Step 5: Solve for x
    x = 252,438.52/437.37
  6. Step 6: Final answer
    x = 577.18

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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.