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Finding the Fourth Proportional to 358.26, 493.83 and 253.47

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Solution

The fourth proportional to 358.26, 493.83 and 253.47 is: 349.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.26 : 493.83 = 253.47 : x
  2. Step 2: Convert to fraction form
    358.26/493.83 = 253.47/x
  3. Step 3: Cross multiply
    358.26x = 493.83 × 253.47
  4. Step 4: Simplify right side
    358.26x = 125,171.09
  5. Step 5: Solve for x
    x = 125,171.09/358.26
  6. Step 6: Final answer
    x = 349.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.