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Finding the Fourth Proportional to 387.07, 581.03 and 204.41

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Solution

The fourth proportional to 387.07, 581.03 and 204.41 is: 306.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.07 : 581.03 = 204.41 : x
  2. Step 2: Convert to fraction form
    387.07/581.03 = 204.41/x
  3. Step 3: Cross multiply
    387.07x = 581.03 × 204.41
  4. Step 4: Simplify right side
    387.07x = 118,768.34
  5. Step 5: Solve for x
    x = 118,768.34/387.07
  6. Step 6: Final answer
    x = 306.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.