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Finding the Fourth Proportional to 352.80, 530.28 and 348.48

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Solution

The fourth proportional to 352.80, 530.28 and 348.48 is: 523.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.80 : 530.28 = 348.48 : x
  2. Step 2: Convert to fraction form
    352.80/530.28 = 348.48/x
  3. Step 3: Cross multiply
    352.80x = 530.28 × 348.48
  4. Step 4: Simplify right side
    352.80x = 184,791.97
  5. Step 5: Solve for x
    x = 184,791.97/352.80
  6. Step 6: Final answer
    x = 523.79

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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.