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Finding the Fourth Proportional to 423.87, 635.55 and 176.79

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Solution

The fourth proportional to 423.87, 635.55 and 176.79 is: 265.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.87 : 635.55 = 176.79 : x
  2. Step 2: Convert to fraction form
    423.87/635.55 = 176.79/x
  3. Step 3: Cross multiply
    423.87x = 635.55 × 176.79
  4. Step 4: Simplify right side
    423.87x = 112,358.88
  5. Step 5: Solve for x
    x = 112,358.88/423.87
  6. Step 6: Final answer
    x = 265.08

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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.