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Finding the Fourth Proportional to 638.01, 956.86 and 175.77

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Solution

The fourth proportional to 638.01, 956.86 and 175.77 is: 263.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.01 : 956.86 = 175.77 : x
  2. Step 2: Convert to fraction form
    638.01/956.86 = 175.77/x
  3. Step 3: Cross multiply
    638.01x = 956.86 × 175.77
  4. Step 4: Simplify right side
    638.01x = 168,187.83
  5. Step 5: Solve for x
    x = 168,187.83/638.01
  6. Step 6: Final answer
    x = 263.61

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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.