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Finding the Fourth Proportional to 417.86, 626.92 and 158

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Solution

The fourth proportional to 417.86, 626.92 and 158 is: 237.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.86 : 626.92 = 158 : x
  2. Step 2: Convert to fraction form
    417.86/626.92 = 158/x
  3. Step 3: Cross multiply
    417.86x = 626.92 × 158
  4. Step 4: Simplify right side
    417.86x = 99,053.36
  5. Step 5: Solve for x
    x = 99,053.36/417.86
  6. Step 6: Final answer
    x = 237.05

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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.