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Finding the Fourth Proportional to 295.20, 442.79 and 158.21

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Solution

The fourth proportional to 295.20, 442.79 and 158.21 is: 237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.20 : 442.79 = 158.21 : x
  2. Step 2: Convert to fraction form
    295.20/442.79 = 158.21/x
  3. Step 3: Cross multiply
    295.20x = 442.79 × 158.21
  4. Step 4: Simplify right side
    295.20x = 70,053.81
  5. Step 5: Solve for x
    x = 70,053.81/295.20
  6. Step 6: Final answer
    x = 237.31

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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.