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Finding the Fourth Proportional to 393.41, 587.75 and 348.26

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Solution

The fourth proportional to 393.41, 587.75 and 348.26 is: 520.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.41 : 587.75 = 348.26 : x
  2. Step 2: Convert to fraction form
    393.41/587.75 = 348.26/x
  3. Step 3: Cross multiply
    393.41x = 587.75 × 348.26
  4. Step 4: Simplify right side
    393.41x = 204,685.13
  5. Step 5: Solve for x
    x = 204,685.13/393.41
  6. Step 6: Final answer
    x = 520.28

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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.