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Finding the Fourth Proportional to 571.99, 857.74 and 220.38

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Solution

The fourth proportional to 571.99, 857.74 and 220.38 is: 330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.99 : 857.74 = 220.38 : x
  2. Step 2: Convert to fraction form
    571.99/857.74 = 220.38/x
  3. Step 3: Cross multiply
    571.99x = 857.74 × 220.38
  4. Step 4: Simplify right side
    571.99x = 189,028.74
  5. Step 5: Solve for x
    x = 189,028.74/571.99
  6. Step 6: Final answer
    x = 330.48

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Double scale
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Similar ratio
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1.5x scale

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.