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Finding the Fourth Proportional to 434.42, 599.36 and 392.84

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Solution

The fourth proportional to 434.42, 599.36 and 392.84 is: 541.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.42 : 599.36 = 392.84 : x
  2. Step 2: Convert to fraction form
    434.42/599.36 = 392.84/x
  3. Step 3: Cross multiply
    434.42x = 599.36 × 392.84
  4. Step 4: Simplify right side
    434.42x = 235,452.58
  5. Step 5: Solve for x
    x = 235,452.58/434.42
  6. Step 6: Final answer
    x = 541.99

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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.