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Finding the Fourth Proportional to 307.26, 459.72 and 170.42

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Solution

The fourth proportional to 307.26, 459.72 and 170.42 is: 254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.26 : 459.72 = 170.42 : x
  2. Step 2: Convert to fraction form
    307.26/459.72 = 170.42/x
  3. Step 3: Cross multiply
    307.26x = 459.72 × 170.42
  4. Step 4: Simplify right side
    307.26x = 78,343.18
  5. Step 5: Solve for x
    x = 78,343.18/307.26
  6. Step 6: Final answer
    x = 254.97

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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.