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Finding the Fourth Proportional to 295.11, 442.76 and 212.69

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Solution

The fourth proportional to 295.11, 442.76 and 212.69 is: 319.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.11 : 442.76 = 212.69 : x
  2. Step 2: Convert to fraction form
    295.11/442.76 = 212.69/x
  3. Step 3: Cross multiply
    295.11x = 442.76 × 212.69
  4. Step 4: Simplify right side
    295.11x = 94,167.35
  5. Step 5: Solve for x
    x = 94,167.35/295.11
  6. Step 6: Final answer
    x = 319.09

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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.