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Finding the Fourth Proportional to 308.08, 459.16 and 305.54

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Solution

The fourth proportional to 308.08, 459.16 and 305.54 is: 455.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.08 : 459.16 = 305.54 : x
  2. Step 2: Convert to fraction form
    308.08/459.16 = 305.54/x
  3. Step 3: Cross multiply
    308.08x = 459.16 × 305.54
  4. Step 4: Simplify right side
    308.08x = 140,291.75
  5. Step 5: Solve for x
    x = 140,291.75/308.08
  6. Step 6: Final answer
    x = 455.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.