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Finding the Fourth Proportional to 434.36, 599.42 and 279.11

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Solution

The fourth proportional to 434.36, 599.42 and 279.11 is: 385.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.36 : 599.42 = 279.11 : x
  2. Step 2: Convert to fraction form
    434.36/599.42 = 279.11/x
  3. Step 3: Cross multiply
    434.36x = 599.42 × 279.11
  4. Step 4: Simplify right side
    434.36x = 167,304.12
  5. Step 5: Solve for x
    x = 167,304.12/434.36
  6. Step 6: Final answer
    x = 385.17

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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.