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Finding the Fourth Proportional to 295.30, 442.81 and 141.10

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Solution

The fourth proportional to 295.30, 442.81 and 141.10 is: 211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.30 : 442.81 = 141.10 : x
  2. Step 2: Convert to fraction form
    295.30/442.81 = 141.10/x
  3. Step 3: Cross multiply
    295.30x = 442.81 × 141.10
  4. Step 4: Simplify right side
    295.30x = 62,480.49
  5. Step 5: Solve for x
    x = 62,480.49/295.30
  6. Step 6: Final answer
    x = 211.58

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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.