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Finding the Fourth Proportional to 379.80, 524.09 and 214.01

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Solution

The fourth proportional to 379.80, 524.09 and 214.01 is: 295.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.80 : 524.09 = 214.01 : x
  2. Step 2: Convert to fraction form
    379.80/524.09 = 214.01/x
  3. Step 3: Cross multiply
    379.80x = 524.09 × 214.01
  4. Step 4: Simplify right side
    379.80x = 112,160.50
  5. Step 5: Solve for x
    x = 112,160.50/379.80
  6. Step 6: Final answer
    x = 295.31

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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.