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Finding the Fourth Proportional to 358.19, 494.46 and 253.36

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Solution

The fourth proportional to 358.19, 494.46 and 253.36 is: 349.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.19 : 494.46 = 253.36 : x
  2. Step 2: Convert to fraction form
    358.19/494.46 = 253.36/x
  3. Step 3: Cross multiply
    358.19x = 494.46 × 253.36
  4. Step 4: Simplify right side
    358.19x = 125,275.15
  5. Step 5: Solve for x
    x = 125,275.15/358.19
  6. Step 6: Final answer
    x = 349.75

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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.