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Finding the Fourth Proportional to 424.55, 636.64 and 150.51

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Solution

The fourth proportional to 424.55, 636.64 and 150.51 is: 225.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.55 : 636.64 = 150.51 : x
  2. Step 2: Convert to fraction form
    424.55/636.64 = 150.51/x
  3. Step 3: Cross multiply
    424.55x = 636.64 × 150.51
  4. Step 4: Simplify right side
    424.55x = 95,820.69
  5. Step 5: Solve for x
    x = 95,820.69/424.55
  6. Step 6: Final answer
    x = 225.70

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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.