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Finding the Fourth Proportional to 424.16, 636.08 and 150.16

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Solution

The fourth proportional to 424.16, 636.08 and 150.16 is: 225.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.16 : 636.08 = 150.16 : x
  2. Step 2: Convert to fraction form
    424.16/636.08 = 150.16/x
  3. Step 3: Cross multiply
    424.16x = 636.08 × 150.16
  4. Step 4: Simplify right side
    424.16x = 95,513.77
  5. Step 5: Solve for x
    x = 95,513.77/424.16
  6. Step 6: Final answer
    x = 225.18

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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.