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Finding the Fourth Proportional to 572.32, 858.58 and 225.67

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Solution

The fourth proportional to 572.32, 858.58 and 225.67 is: 338.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.32 : 858.58 = 225.67 : x
  2. Step 2: Convert to fraction form
    572.32/858.58 = 225.67/x
  3. Step 3: Cross multiply
    572.32x = 858.58 × 225.67
  4. Step 4: Simplify right side
    572.32x = 193,750.33
  5. Step 5: Solve for x
    x = 193,750.33/572.32
  6. Step 6: Final answer
    x = 338.54

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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.