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Finding the Fourth Proportional to 284.07, 391.80 and 214.14

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Solution

The fourth proportional to 284.07, 391.80 and 214.14 is: 295.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.07 : 391.80 = 214.14 : x
  2. Step 2: Convert to fraction form
    284.07/391.80 = 214.14/x
  3. Step 3: Cross multiply
    284.07x = 391.80 × 214.14
  4. Step 4: Simplify right side
    284.07x = 83,902.32
  5. Step 5: Solve for x
    x = 83,902.32/284.07
  6. Step 6: Final answer
    x = 295.35

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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.