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Finding the Fourth Proportional to 509.97, 763.96 and 347.25

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Solution

The fourth proportional to 509.97, 763.96 and 347.25 is: 520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.97 : 763.96 = 347.25 : x
  2. Step 2: Convert to fraction form
    509.97/763.96 = 347.25/x
  3. Step 3: Cross multiply
    509.97x = 763.96 × 347.25
  4. Step 4: Simplify right side
    509.97x = 265,285.11
  5. Step 5: Solve for x
    x = 265,285.11/509.97
  6. Step 6: Final answer
    x = 520.20

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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.