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Finding the Fourth Proportional to 570.30, 855.32 and 223.62

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Solution

The fourth proportional to 570.30, 855.32 and 223.62 is: 335.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.30 : 855.32 = 223.62 : x
  2. Step 2: Convert to fraction form
    570.30/855.32 = 223.62/x
  3. Step 3: Cross multiply
    570.30x = 855.32 × 223.62
  4. Step 4: Simplify right side
    570.30x = 191,265.54
  5. Step 5: Solve for x
    x = 191,265.54/570.30
  6. Step 6: Final answer
    x = 335.38

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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.