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Finding the Fourth Proportional to 433.42, 650.22 and 393.10

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Solution

The fourth proportional to 433.42, 650.22 and 393.10 is: 589.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.42 : 650.22 = 393.10 : x
  2. Step 2: Convert to fraction form
    433.42/650.22 = 393.10/x
  3. Step 3: Cross multiply
    433.42x = 650.22 × 393.10
  4. Step 4: Simplify right side
    433.42x = 255,601.48
  5. Step 5: Solve for x
    x = 255,601.48/433.42
  6. Step 6: Final answer
    x = 589.73

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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.