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Finding the Fourth Proportional to 571.65, 857.48 and 160.80

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Solution

The fourth proportional to 571.65, 857.48 and 160.80 is: 241.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.65 : 857.48 = 160.80 : x
  2. Step 2: Convert to fraction form
    571.65/857.48 = 160.80/x
  3. Step 3: Cross multiply
    571.65x = 857.48 × 160.80
  4. Step 4: Simplify right side
    571.65x = 137,882.78
  5. Step 5: Solve for x
    x = 137,882.78/571.65
  6. Step 6: Final answer
    x = 241.20

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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.