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Finding the Fourth Proportional to 572.42, 858.18 and 298.64

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Solution

The fourth proportional to 572.42, 858.18 and 298.64 is: 447.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.42 : 858.18 = 298.64 : x
  2. Step 2: Convert to fraction form
    572.42/858.18 = 298.64/x
  3. Step 3: Cross multiply
    572.42x = 858.18 × 298.64
  4. Step 4: Simplify right side
    572.42x = 256,286.88
  5. Step 5: Solve for x
    x = 256,286.88/572.42
  6. Step 6: Final answer
    x = 447.73

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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.