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Finding the Fourth Proportional to 424.97, 637.34 and 164.87

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Solution

The fourth proportional to 424.97, 637.34 and 164.87 is: 247.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.97 : 637.34 = 164.87 : x
  2. Step 2: Convert to fraction form
    424.97/637.34 = 164.87/x
  3. Step 3: Cross multiply
    424.97x = 637.34 × 164.87
  4. Step 4: Simplify right side
    424.97x = 105,074.23
  5. Step 5: Solve for x
    x = 105,074.23/424.97
  6. Step 6: Final answer
    x = 247.25

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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.