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Finding the Fourth Proportional to 309.48, 464.14 and 126.83

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Solution

The fourth proportional to 309.48, 464.14 and 126.83 is: 190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.48 : 464.14 = 126.83 : x
  2. Step 2: Convert to fraction form
    309.48/464.14 = 126.83/x
  3. Step 3: Cross multiply
    309.48x = 464.14 × 126.83
  4. Step 4: Simplify right side
    309.48x = 58,864.24
  5. Step 5: Solve for x
    x = 58,864.24/309.48
  6. Step 6: Final answer
    x = 190.20

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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.