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Finding the Fourth Proportional to 572.45, 858.35 and 225.54

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Solution

The fourth proportional to 572.45, 858.35 and 225.54 is: 338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.45 : 858.35 = 225.54 : x
  2. Step 2: Convert to fraction form
    572.45/858.35 = 225.54/x
  3. Step 3: Cross multiply
    572.45x = 858.35 × 225.54
  4. Step 4: Simplify right side
    572.45x = 193,592.26
  5. Step 5: Solve for x
    x = 193,592.26/572.45
  6. Step 6: Final answer
    x = 338.18

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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.