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Finding the Fourth Proportional to 571.92, 858 and 187.14

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Solution

The fourth proportional to 571.92, 858 and 187.14 is: 280.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.92 : 858 = 187.14 : x
  2. Step 2: Convert to fraction form
    571.92/858 = 187.14/x
  3. Step 3: Cross multiply
    571.92x = 858 × 187.14
  4. Step 4: Simplify right side
    571.92x = 160,566.12
  5. Step 5: Solve for x
    x = 160,566.12/571.92
  6. Step 6: Final answer
    x = 280.75

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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.