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Finding the Fourth Proportional to 433.90, 650.66 and 125.68

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Solution

The fourth proportional to 433.90, 650.66 and 125.68 is: 188.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.90 : 650.66 = 125.68 : x
  2. Step 2: Convert to fraction form
    433.90/650.66 = 125.68/x
  3. Step 3: Cross multiply
    433.90x = 650.66 × 125.68
  4. Step 4: Simplify right side
    433.90x = 81,774.95
  5. Step 5: Solve for x
    x = 81,774.95/433.90
  6. Step 6: Final answer
    x = 188.46

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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.