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Finding the Fourth Proportional to 434.39, 599.53 and 419.97

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Solution

The fourth proportional to 434.39, 599.53 and 419.97 is: 579.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.39 : 599.53 = 419.97 : x
  2. Step 2: Convert to fraction form
    434.39/599.53 = 419.97/x
  3. Step 3: Cross multiply
    434.39x = 599.53 × 419.97
  4. Step 4: Simplify right side
    434.39x = 251,784.61
  5. Step 5: Solve for x
    x = 251,784.61/434.39
  6. Step 6: Final answer
    x = 579.63

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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.