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Finding the Fourth Proportional to 293.50, 405.06 and 190

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Solution

The fourth proportional to 293.50, 405.06 and 190 is: 262.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.50 : 405.06 = 190 : x
  2. Step 2: Convert to fraction form
    293.50/405.06 = 190/x
  3. Step 3: Cross multiply
    293.50x = 405.06 × 190
  4. Step 4: Simplify right side
    293.50x = 76,961.40
  5. Step 5: Solve for x
    x = 76,961.40/293.50
  6. Step 6: Final answer
    x = 262.22

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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.