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Finding the Fourth Proportional to 622.33, 932.81 and 553.99

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Solution

The fourth proportional to 622.33, 932.81 and 553.99 is: 830.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.33 : 932.81 = 553.99 : x
  2. Step 2: Convert to fraction form
    622.33/932.81 = 553.99/x
  3. Step 3: Cross multiply
    622.33x = 932.81 × 553.99
  4. Step 4: Simplify right side
    622.33x = 516,762.75
  5. Step 5: Solve for x
    x = 516,762.75/622.33
  6. Step 6: Final answer
    x = 830.37

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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.