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Finding the Fourth Proportional to 570.87, 856.69 and 262.72

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Solution

The fourth proportional to 570.87, 856.69 and 262.72 is: 394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.87 : 856.69 = 262.72 : x
  2. Step 2: Convert to fraction form
    570.87/856.69 = 262.72/x
  3. Step 3: Cross multiply
    570.87x = 856.69 × 262.72
  4. Step 4: Simplify right side
    570.87x = 225,069.60
  5. Step 5: Solve for x
    x = 225,069.60/570.87
  6. Step 6: Final answer
    x = 394.26

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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.