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Finding the Fourth Proportional to 293.50, 404.85 and 188.55

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Solution

The fourth proportional to 293.50, 404.85 and 188.55 is: 260.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.50 : 404.85 = 188.55 : x
  2. Step 2: Convert to fraction form
    293.50/404.85 = 188.55/x
  3. Step 3: Cross multiply
    293.50x = 404.85 × 188.55
  4. Step 4: Simplify right side
    293.50x = 76,334.47
  5. Step 5: Solve for x
    x = 76,334.47/293.50
  6. Step 6: Final answer
    x = 260.08

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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.