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Finding the Fourth Proportional to 424.16, 636.15 and 116

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Solution

The fourth proportional to 424.16, 636.15 and 116 is: 173.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.16 : 636.15 = 116 : x
  2. Step 2: Convert to fraction form
    424.16/636.15 = 116/x
  3. Step 3: Cross multiply
    424.16x = 636.15 × 116
  4. Step 4: Simplify right side
    424.16x = 73,792.82
  5. Step 5: Solve for x
    x = 73,792.82/424.16
  6. Step 6: Final answer
    x = 173.98

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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.