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Finding the Fourth Proportional to 622.80, 929.67 and 571.44

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Solution

The fourth proportional to 622.80, 929.67 and 571.44 is: 853.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.80 : 929.67 = 571.44 : x
  2. Step 2: Convert to fraction form
    622.80/929.67 = 571.44/x
  3. Step 3: Cross multiply
    622.80x = 929.67 × 571.44
  4. Step 4: Simplify right side
    622.80x = 531,243.12
  5. Step 5: Solve for x
    x = 531,243.12/622.80
  6. Step 6: Final answer
    x = 853.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.