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Finding the Fourth Proportional to 356.72, 535.46 and 194.36

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Solution

The fourth proportional to 356.72, 535.46 and 194.36 is: 291.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.72 : 535.46 = 194.36 : x
  2. Step 2: Convert to fraction form
    356.72/535.46 = 194.36/x
  3. Step 3: Cross multiply
    356.72x = 535.46 × 194.36
  4. Step 4: Simplify right side
    356.72x = 104,072.01
  5. Step 5: Solve for x
    x = 104,072.01/356.72
  6. Step 6: Final answer
    x = 291.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.