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Finding the Fourth Proportional to 352.93, 529.25 and 147.40

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Solution

The fourth proportional to 352.93, 529.25 and 147.40 is: 221.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.93 : 529.25 = 147.40 : x
  2. Step 2: Convert to fraction form
    352.93/529.25 = 147.40/x
  3. Step 3: Cross multiply
    352.93x = 529.25 × 147.40
  4. Step 4: Simplify right side
    352.93x = 78,008.07
  5. Step 5: Solve for x
    x = 78,008.07/352.93
  6. Step 6: Final answer
    x = 221.03

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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.