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Finding the Fourth Proportional to 603.55, 905.38 and 164.80

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Solution

The fourth proportional to 603.55, 905.38 and 164.80 is: 247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.55 : 905.38 = 164.80 : x
  2. Step 2: Convert to fraction form
    603.55/905.38 = 164.80/x
  3. Step 3: Cross multiply
    603.55x = 905.38 × 164.80
  4. Step 4: Simplify right side
    603.55x = 149,207.34
  5. Step 5: Solve for x
    x = 149,207.34/603.55
  6. Step 6: Final answer
    x = 247.22

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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.