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Finding the Fourth Proportional to 437.86, 603.93 and 321.22

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Solution

The fourth proportional to 437.86, 603.93 and 321.22 is: 443.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.86 : 603.93 = 321.22 : x
  2. Step 2: Convert to fraction form
    437.86/603.93 = 321.22/x
  3. Step 3: Cross multiply
    437.86x = 603.93 × 321.22
  4. Step 4: Simplify right side
    437.86x = 193,994.39
  5. Step 5: Solve for x
    x = 193,994.39/437.86
  6. Step 6: Final answer
    x = 443.05

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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.