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Finding the Fourth Proportional to 571.50, 788.68 and 322.77

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Solution

The fourth proportional to 571.50, 788.68 and 322.77 is: 445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.50 : 788.68 = 322.77 : x
  2. Step 2: Convert to fraction form
    571.50/788.68 = 322.77/x
  3. Step 3: Cross multiply
    571.50x = 788.68 × 322.77
  4. Step 4: Simplify right side
    571.50x = 254,562.24
  5. Step 5: Solve for x
    x = 254,562.24/571.50
  6. Step 6: Final answer
    x = 445.43

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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.