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Finding the Fourth Proportional to 570.45, 855.35 and 223.54

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Solution

The fourth proportional to 570.45, 855.35 and 223.54 is: 335.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.45 : 855.35 = 223.54 : x
  2. Step 2: Convert to fraction form
    570.45/855.35 = 223.54/x
  3. Step 3: Cross multiply
    570.45x = 855.35 × 223.54
  4. Step 4: Simplify right side
    570.45x = 191,204.94
  5. Step 5: Solve for x
    x = 191,204.94/570.45
  6. Step 6: Final answer
    x = 335.18

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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.