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Finding the Fourth Proportional to 570.92, 856.28 and 186.18

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Solution

The fourth proportional to 570.92, 856.28 and 186.18 is: 279.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.92 : 856.28 = 186.18 : x
  2. Step 2: Convert to fraction form
    570.92/856.28 = 186.18/x
  3. Step 3: Cross multiply
    570.92x = 856.28 × 186.18
  4. Step 4: Simplify right side
    570.92x = 159,422.21
  5. Step 5: Solve for x
    x = 159,422.21/570.92
  6. Step 6: Final answer
    x = 279.24

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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.