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Finding the Fourth Proportional to 214.80, 295.65 and 206.88

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Solution

The fourth proportional to 214.80, 295.65 and 206.88 is: 284.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.80 : 295.65 = 206.88 : x
  2. Step 2: Convert to fraction form
    214.80/295.65 = 206.88/x
  3. Step 3: Cross multiply
    214.80x = 295.65 × 206.88
  4. Step 4: Simplify right side
    214.80x = 61,164.07
  5. Step 5: Solve for x
    x = 61,164.07/214.80
  6. Step 6: Final answer
    x = 284.75

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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.