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Finding the Fourth Proportional to 532.80, 796.70 and 394.50

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Solution

The fourth proportional to 532.80, 796.70 and 394.50 is: 589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.80 : 796.70 = 394.50 : x
  2. Step 2: Convert to fraction form
    532.80/796.70 = 394.50/x
  3. Step 3: Cross multiply
    532.80x = 796.70 × 394.50
  4. Step 4: Simplify right side
    532.80x = 314,298.15
  5. Step 5: Solve for x
    x = 314,298.15/532.80
  6. Step 6: Final answer
    x = 589.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.