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Finding the Fourth Proportional to 351.62, 526.98 and 189.12

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Solution

The fourth proportional to 351.62, 526.98 and 189.12 is: 283.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.62 : 526.98 = 189.12 : x
  2. Step 2: Convert to fraction form
    351.62/526.98 = 189.12/x
  3. Step 3: Cross multiply
    351.62x = 526.98 × 189.12
  4. Step 4: Simplify right side
    351.62x = 99,658.88
  5. Step 5: Solve for x
    x = 99,658.88/351.62
  6. Step 6: Final answer
    x = 283.43

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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.