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Finding the Fourth Proportional to 568.38, 852.40 and 157.42

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Solution

The fourth proportional to 568.38, 852.40 and 157.42 is: 236.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.38 : 852.40 = 157.42 : x
  2. Step 2: Convert to fraction form
    568.38/852.40 = 157.42/x
  3. Step 3: Cross multiply
    568.38x = 852.40 × 157.42
  4. Step 4: Simplify right side
    568.38x = 134,184.81
  5. Step 5: Solve for x
    x = 134,184.81/568.38
  6. Step 6: Final answer
    x = 236.08

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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.