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Finding the Fourth Proportional to 433.91, 651.18 and 170.40

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Solution

The fourth proportional to 433.91, 651.18 and 170.40 is: 255.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.91 : 651.18 = 170.40 : x
  2. Step 2: Convert to fraction form
    433.91/651.18 = 170.40/x
  3. Step 3: Cross multiply
    433.91x = 651.18 × 170.40
  4. Step 4: Simplify right side
    433.91x = 110,962.70
  5. Step 5: Solve for x
    x = 110,962.70/433.91
  6. Step 6: Final answer
    x = 255.73

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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.