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Finding the Fourth Proportional to 306.25, 459.38 and 191.02

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Solution

The fourth proportional to 306.25, 459.38 and 191.02 is: 286.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.25 : 459.38 = 191.02 : x
  2. Step 2: Convert to fraction form
    306.25/459.38 = 191.02/x
  3. Step 3: Cross multiply
    306.25x = 459.38 × 191.02
  4. Step 4: Simplify right side
    306.25x = 87,750.96
  5. Step 5: Solve for x
    x = 87,750.96/306.25
  6. Step 6: Final answer
    x = 286.54

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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.