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Finding the Fourth Proportional to 306.05, 459 and 255.02

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Solution

The fourth proportional to 306.05, 459 and 255.02 is: 382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.05 : 459 = 255.02 : x
  2. Step 2: Convert to fraction form
    306.05/459 = 255.02/x
  3. Step 3: Cross multiply
    306.05x = 459 × 255.02
  4. Step 4: Simplify right side
    306.05x = 117,051.89
  5. Step 5: Solve for x
    x = 117,051.89/306.05
  6. Step 6: Final answer
    x = 382.47

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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.