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Finding the Fourth Proportional to 354.73, 528.91 and 348.25

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Solution

The fourth proportional to 354.73, 528.91 and 348.25 is: 519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.73 : 528.91 = 348.25 : x
  2. Step 2: Convert to fraction form
    354.73/528.91 = 348.25/x
  3. Step 3: Cross multiply
    354.73x = 528.91 × 348.25
  4. Step 4: Simplify right side
    354.73x = 184,193.78
  5. Step 5: Solve for x
    x = 184,193.78/354.73
  6. Step 6: Final answer
    x = 519.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.