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Finding the Fourth Proportional to 571.72, 857.55 and 201.50

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Solution

The fourth proportional to 571.72, 857.55 and 201.50 is: 302.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.72 : 857.55 = 201.50 : x
  2. Step 2: Convert to fraction form
    571.72/857.55 = 201.50/x
  3. Step 3: Cross multiply
    571.72x = 857.55 × 201.50
  4. Step 4: Simplify right side
    571.72x = 172,796.33
  5. Step 5: Solve for x
    x = 172,796.33/571.72
  6. Step 6: Final answer
    x = 302.24

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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.