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Finding the Fourth Proportional to 419.96, 579.53 and 233.45

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Solution

The fourth proportional to 419.96, 579.53 and 233.45 is: 322.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.96 : 579.53 = 233.45 : x
  2. Step 2: Convert to fraction form
    419.96/579.53 = 233.45/x
  3. Step 3: Cross multiply
    419.96x = 579.53 × 233.45
  4. Step 4: Simplify right side
    419.96x = 135,291.14
  5. Step 5: Solve for x
    x = 135,291.14/419.96
  6. Step 6: Final answer
    x = 322.15

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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.