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Finding the Fourth Proportional to 293.48, 405 and 160.70

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Solution

The fourth proportional to 293.48, 405 and 160.70 is: 221.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.48 : 405 = 160.70 : x
  2. Step 2: Convert to fraction form
    293.48/405 = 160.70/x
  3. Step 3: Cross multiply
    293.48x = 405 × 160.70
  4. Step 4: Simplify right side
    293.48x = 65,083.50
  5. Step 5: Solve for x
    x = 65,083.50/293.48
  6. Step 6: Final answer
    x = 221.76

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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.