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Finding the Fourth Proportional to 419.93, 579.49 and 233.41

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Solution

The fourth proportional to 419.93, 579.49 and 233.41 is: 322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.93 : 579.49 = 233.41 : x
  2. Step 2: Convert to fraction form
    419.93/579.49 = 233.41/x
  3. Step 3: Cross multiply
    419.93x = 579.49 × 233.41
  4. Step 4: Simplify right side
    419.93x = 135,258.76
  5. Step 5: Solve for x
    x = 135,258.76/419.93
  6. Step 6: Final answer
    x = 322.10

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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.