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Finding the Fourth Proportional to 393.44, 591.17 and 350.51

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Solution

The fourth proportional to 393.44, 591.17 and 350.51 is: 526.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.44 : 591.17 = 350.51 : x
  2. Step 2: Convert to fraction form
    393.44/591.17 = 350.51/x
  3. Step 3: Cross multiply
    393.44x = 591.17 × 350.51
  4. Step 4: Simplify right side
    393.44x = 207,206.29
  5. Step 5: Solve for x
    x = 207,206.29/393.44
  6. Step 6: Final answer
    x = 526.66

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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.