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Finding the Fourth Proportional to 214.84, 296.53 and 121.64

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Solution

The fourth proportional to 214.84, 296.53 and 121.64 is: 167.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.84 : 296.53 = 121.64 : x
  2. Step 2: Convert to fraction form
    214.84/296.53 = 121.64/x
  3. Step 3: Cross multiply
    214.84x = 296.53 × 121.64
  4. Step 4: Simplify right side
    214.84x = 36,069.16
  5. Step 5: Solve for x
    x = 36,069.16/214.84
  6. Step 6: Final answer
    x = 167.89

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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.