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Finding the Fourth Proportional to 419.56, 579.02 and 233.07

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Solution

The fourth proportional to 419.56, 579.02 and 233.07 is: 321.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.56 : 579.02 = 233.07 : x
  2. Step 2: Convert to fraction form
    419.56/579.02 = 233.07/x
  3. Step 3: Cross multiply
    419.56x = 579.02 × 233.07
  4. Step 4: Simplify right side
    419.56x = 134,952.19
  5. Step 5: Solve for x
    x = 134,952.19/419.56
  6. Step 6: Final answer
    x = 321.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.