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Finding the Fourth Proportional to 354.11, 528.94 and 347.63

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Solution

The fourth proportional to 354.11, 528.94 and 347.63 is: 519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.11 : 528.94 = 347.63 : x
  2. Step 2: Convert to fraction form
    354.11/528.94 = 347.63/x
  3. Step 3: Cross multiply
    354.11x = 528.94 × 347.63
  4. Step 4: Simplify right side
    354.11x = 183,872.22
  5. Step 5: Solve for x
    x = 183,872.22/354.11
  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.