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Finding the Fourth Proportional to 214.48, 295.95 and 121.23

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Solution

The fourth proportional to 214.48, 295.95 and 121.23 is: 167.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.48 : 295.95 = 121.23 : x
  2. Step 2: Convert to fraction form
    214.48/295.95 = 121.23/x
  3. Step 3: Cross multiply
    214.48x = 295.95 × 121.23
  4. Step 4: Simplify right side
    214.48x = 35,878.47
  5. Step 5: Solve for x
    x = 35,878.47/214.48
  6. Step 6: Final answer
    x = 167.28

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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.