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Finding the Fourth Proportional to 622.19, 933.64 and 280.19

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Solution

The fourth proportional to 622.19, 933.64 and 280.19 is: 420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.19 : 933.64 = 280.19 : x
  2. Step 2: Convert to fraction form
    622.19/933.64 = 280.19/x
  3. Step 3: Cross multiply
    622.19x = 933.64 × 280.19
  4. Step 4: Simplify right side
    622.19x = 261,596.59
  5. Step 5: Solve for x
    x = 261,596.59/622.19
  6. Step 6: Final answer
    x = 420.44

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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.