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Finding the Fourth Proportional to 352.18, 528.15 and 146.69

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Solution

The fourth proportional to 352.18, 528.15 and 146.69 is: 219.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.18 : 528.15 = 146.69 : x
  2. Step 2: Convert to fraction form
    352.18/528.15 = 146.69/x
  3. Step 3: Cross multiply
    352.18x = 528.15 × 146.69
  4. Step 4: Simplify right side
    352.18x = 77,476.01
  5. Step 5: Solve for x
    x = 77,476.01/352.18
  6. Step 6: Final answer
    x = 219.99

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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.