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Finding the Fourth Proportional to 307.90, 462.14 and 192.57

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Solution

The fourth proportional to 307.90, 462.14 and 192.57 is: 289.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.90 : 462.14 = 192.57 : x
  2. Step 2: Convert to fraction form
    307.90/462.14 = 192.57/x
  3. Step 3: Cross multiply
    307.90x = 462.14 × 192.57
  4. Step 4: Simplify right side
    307.90x = 88,992.33
  5. Step 5: Solve for x
    x = 88,992.33/307.90
  6. Step 6: Final answer
    x = 289.03

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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.