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Finding the Fourth Proportional to 175.79, 263.47 and 84.36

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Solution

The fourth proportional to 175.79, 263.47 and 84.36 is: 126.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.79 : 263.47 = 84.36 : x
  2. Step 2: Convert to fraction form
    175.79/263.47 = 84.36/x
  3. Step 3: Cross multiply
    175.79x = 263.47 × 84.36
  4. Step 4: Simplify right side
    175.79x = 22,225.22
  5. Step 5: Solve for x
    x = 22,225.22/175.79
  6. Step 6: Final answer
    x = 126.43

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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.