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Finding the Fourth Proportional to 260.01, 388.19 and 214.45

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Solution

The fourth proportional to 260.01, 388.19 and 214.45 is: 320.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.01 : 388.19 = 214.45 : x
  2. Step 2: Convert to fraction form
    260.01/388.19 = 214.45/x
  3. Step 3: Cross multiply
    260.01x = 388.19 × 214.45
  4. Step 4: Simplify right side
    260.01x = 83,246.91
  5. Step 5: Solve for x
    x = 83,246.91/260.01
  6. Step 6: Final answer
    x = 320.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.