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Finding the Fourth Proportional to 571.15, 857.04 and 242.31

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Solution

The fourth proportional to 571.15, 857.04 and 242.31 is: 363.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.15 : 857.04 = 242.31 : x
  2. Step 2: Convert to fraction form
    571.15/857.04 = 242.31/x
  3. Step 3: Cross multiply
    571.15x = 857.04 × 242.31
  4. Step 4: Simplify right side
    571.15x = 207,669.36
  5. Step 5: Solve for x
    x = 207,669.36/571.15
  6. Step 6: Final answer
    x = 363.60

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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.