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Finding the Fourth Proportional to 353.81, 485.03 and 348.14

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Solution

The fourth proportional to 353.81, 485.03 and 348.14 is: 477.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.81 : 485.03 = 348.14 : x
  2. Step 2: Convert to fraction form
    353.81/485.03 = 348.14/x
  3. Step 3: Cross multiply
    353.81x = 485.03 × 348.14
  4. Step 4: Simplify right side
    353.81x = 168,858.34
  5. Step 5: Solve for x
    x = 168,858.34/353.81
  6. Step 6: Final answer
    x = 477.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.