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Finding the Fourth Proportional to 433.74, 650 and 317.50

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Solution

The fourth proportional to 433.74, 650 and 317.50 is: 475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.74 : 650 = 317.50 : x
  2. Step 2: Convert to fraction form
    433.74/650 = 317.50/x
  3. Step 3: Cross multiply
    433.74x = 650 × 317.50
  4. Step 4: Simplify right side
    433.74x = 206,375
  5. Step 5: Solve for x
    x = 206,375/433.74
  6. Step 6: Final answer
    x = 475.80

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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.