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Finding the Fourth Proportional to 433.70, 650.40 and 190.16

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Solution

The fourth proportional to 433.70, 650.40 and 190.16 is: 285.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.70 : 650.40 = 190.16 : x
  2. Step 2: Convert to fraction form
    433.70/650.40 = 190.16/x
  3. Step 3: Cross multiply
    433.70x = 650.40 × 190.16
  4. Step 4: Simplify right side
    433.70x = 123,680.06
  5. Step 5: Solve for x
    x = 123,680.06/433.70
  6. Step 6: Final answer
    x = 285.17

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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.