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Finding the Fourth Proportional to 601.20, 829.64 and 339.23

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Solution

The fourth proportional to 601.20, 829.64 and 339.23 is: 468.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.20 : 829.64 = 339.23 : x
  2. Step 2: Convert to fraction form
    601.20/829.64 = 339.23/x
  3. Step 3: Cross multiply
    601.20x = 829.64 × 339.23
  4. Step 4: Simplify right side
    601.20x = 281,432.93
  5. Step 5: Solve for x
    x = 281,432.93/601.20
  6. Step 6: Final answer
    x = 468.12

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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.