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Finding the Fourth Proportional to 354.08, 528.12 and 308.07

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Solution

The fourth proportional to 354.08, 528.12 and 308.07 is: 459.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.08 : 528.12 = 308.07 : x
  2. Step 2: Convert to fraction form
    354.08/528.12 = 308.07/x
  3. Step 3: Cross multiply
    354.08x = 528.12 × 308.07
  4. Step 4: Simplify right side
    354.08x = 162,697.93
  5. Step 5: Solve for x
    x = 162,697.93/354.08
  6. Step 6: Final answer
    x = 459.49

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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.