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Finding the Fourth Proportional to 352.67, 529.69 and 320.55

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Solution

The fourth proportional to 352.67, 529.69 and 320.55 is: 481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.67 : 529.69 = 320.55 : x
  2. Step 2: Convert to fraction form
    352.67/529.69 = 320.55/x
  3. Step 3: Cross multiply
    352.67x = 529.69 × 320.55
  4. Step 4: Simplify right side
    352.67x = 169,792.13
  5. Step 5: Solve for x
    x = 169,792.13/352.67
  6. Step 6: Final answer
    x = 481.45

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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.