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Finding the Fourth Proportional to 509.59, 763.00 and 393.06

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Solution

The fourth proportional to 509.59, 763.00 and 393.06 is: 588.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.59 : 763.00 = 393.06 : x
  2. Step 2: Convert to fraction form
    509.59/763.00 = 393.06/x
  3. Step 3: Cross multiply
    509.59x = 763.00 × 393.06
  4. Step 4: Simplify right side
    509.59x = 299,906.66
  5. Step 5: Solve for x
    x = 299,906.66/509.59
  6. Step 6: Final answer
    x = 588.52

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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.