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Finding the Fourth Proportional to 402.87, 555.83 and 237.03

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Solution

The fourth proportional to 402.87, 555.83 and 237.03 is: 327.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.87 : 555.83 = 237.03 : x
  2. Step 2: Convert to fraction form
    402.87/555.83 = 237.03/x
  3. Step 3: Cross multiply
    402.87x = 555.83 × 237.03
  4. Step 4: Simplify right side
    402.87x = 131,747.20
  5. Step 5: Solve for x
    x = 131,747.20/402.87
  6. Step 6: Final answer
    x = 327.02

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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.