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Finding the Fourth Proportional to 387, 580.95 and 195.03

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Solution

The fourth proportional to 387, 580.95 and 195.03 is: 292.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    387 : 580.95 = 195.03 : x
  2. Step 2: Convert to fraction form
    387/580.95 = 195.03/x
  3. Step 3: Cross multiply
    387x = 580.95 × 195.03
  4. Step 4: Simplify right side
    387x = 113,302.68
  5. Step 5: Solve for x
    x = 113,302.68/387
  6. Step 6: Final answer
    x = 292.77

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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.