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Finding the Fourth Proportional to 295.58, 443.40 and 79.18

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Solution

The fourth proportional to 295.58, 443.40 and 79.18 is: 118.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.58 : 443.40 = 79.18 : x
  2. Step 2: Convert to fraction form
    295.58/443.40 = 79.18/x
  3. Step 3: Cross multiply
    295.58x = 443.40 × 79.18
  4. Step 4: Simplify right side
    295.58x = 35,108.41
  5. Step 5: Solve for x
    x = 35,108.41/295.58
  6. Step 6: Final answer
    x = 118.78

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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.