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Finding the Fourth Proportional to 571.49, 857.25 and 263.60

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Solution

The fourth proportional to 571.49, 857.25 and 263.60 is: 395.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.49 : 857.25 = 263.60 : x
  2. Step 2: Convert to fraction form
    571.49/857.25 = 263.60/x
  3. Step 3: Cross multiply
    571.49x = 857.25 × 263.60
  4. Step 4: Simplify right side
    571.49x = 225,971.10
  5. Step 5: Solve for x
    x = 225,971.10/571.49
  6. Step 6: Final answer
    x = 395.41

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Double scale
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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.