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Finding the Fourth Proportional to 352.08, 528.20 and 207.50

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Solution

The fourth proportional to 352.08, 528.20 and 207.50 is: 311.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.08 : 528.20 = 207.50 : x
  2. Step 2: Convert to fraction form
    352.08/528.20 = 207.50/x
  3. Step 3: Cross multiply
    352.08x = 528.20 × 207.50
  4. Step 4: Simplify right side
    352.08x = 109,601.50
  5. Step 5: Solve for x
    x = 109,601.50/352.08
  6. Step 6: Final answer
    x = 311.30

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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.