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Finding the Fourth Proportional to 571.22, 788.76 and 385.33

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Solution

The fourth proportional to 571.22, 788.76 and 385.33 is: 532.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.22 : 788.76 = 385.33 : x
  2. Step 2: Convert to fraction form
    571.22/788.76 = 385.33/x
  3. Step 3: Cross multiply
    571.22x = 788.76 × 385.33
  4. Step 4: Simplify right side
    571.22x = 303,932.36
  5. Step 5: Solve for x
    x = 303,932.36/571.22
  6. Step 6: Final answer
    x = 532.07

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.