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Finding the Fourth Proportional to 352.43, 528.50 and 146.90

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Solution

The fourth proportional to 352.43, 528.50 and 146.90 is: 220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.43 : 528.50 = 146.90 : x
  2. Step 2: Convert to fraction form
    352.43/528.50 = 146.90/x
  3. Step 3: Cross multiply
    352.43x = 528.50 × 146.90
  4. Step 4: Simplify right side
    352.43x = 77,633.27
  5. Step 5: Solve for x
    x = 77,633.27/352.43
  6. Step 6: Final answer
    x = 220.28

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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.