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Finding the Fourth Proportional to 437.10, 654.07 and 321.25

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Solution

The fourth proportional to 437.10, 654.07 and 321.25 is: 480.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.10 : 654.07 = 321.25 : x
  2. Step 2: Convert to fraction form
    437.10/654.07 = 321.25/x
  3. Step 3: Cross multiply
    437.10x = 654.07 × 321.25
  4. Step 4: Simplify right side
    437.10x = 210,119.99
  5. Step 5: Solve for x
    x = 210,119.99/437.10
  6. Step 6: Final answer
    x = 480.72

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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.