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Finding the Fourth Proportional to 253.16, 349.26 and 194.19

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Solution

The fourth proportional to 253.16, 349.26 and 194.19 is: 267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.16 : 349.26 = 194.19 : x
  2. Step 2: Convert to fraction form
    253.16/349.26 = 194.19/x
  3. Step 3: Cross multiply
    253.16x = 349.26 × 194.19
  4. Step 4: Simplify right side
    253.16x = 67,822.80
  5. Step 5: Solve for x
    x = 67,822.80/253.16
  6. Step 6: Final answer
    x = 267.91

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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.