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Finding the Fourth Proportional to 571.13, 788.06 and 394.45

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Solution

The fourth proportional to 571.13, 788.06 and 394.45 is: 544.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.13 : 788.06 = 394.45 : x
  2. Step 2: Convert to fraction form
    571.13/788.06 = 394.45/x
  3. Step 3: Cross multiply
    571.13x = 788.06 × 394.45
  4. Step 4: Simplify right side
    571.13x = 310,849.28
  5. Step 5: Solve for x
    x = 310,849.28/571.13
  6. Step 6: Final answer
    x = 544.27

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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.