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Finding the Fourth Proportional to 568.31, 852.45 and 157.47

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Solution

The fourth proportional to 568.31, 852.45 and 157.47 is: 236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.31 : 852.45 = 157.47 : x
  2. Step 2: Convert to fraction form
    568.31/852.45 = 157.47/x
  3. Step 3: Cross multiply
    568.31x = 852.45 × 157.47
  4. Step 4: Simplify right side
    568.31x = 134,235.30
  5. Step 5: Solve for x
    x = 134,235.30/568.31
  6. Step 6: Final answer
    x = 236.20

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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.