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Finding the Fourth Proportional to 571.45, 857.43 and 242.47

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Solution

The fourth proportional to 571.45, 857.43 and 242.47 is: 363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.45 : 857.43 = 242.47 : x
  2. Step 2: Convert to fraction form
    571.45/857.43 = 242.47/x
  3. Step 3: Cross multiply
    571.45x = 857.43 × 242.47
  4. Step 4: Simplify right side
    571.45x = 207,901.05
  5. Step 5: Solve for x
    x = 207,901.05/571.45
  6. Step 6: Final answer
    x = 363.81

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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.