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Finding the Fourth Proportional to 532.20, 734.78 and 336

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Solution

The fourth proportional to 532.20, 734.78 and 336 is: 463.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.20 : 734.78 = 336 : x
  2. Step 2: Convert to fraction form
    532.20/734.78 = 336/x
  3. Step 3: Cross multiply
    532.20x = 734.78 × 336
  4. Step 4: Simplify right side
    532.20x = 246,886.08
  5. Step 5: Solve for x
    x = 246,886.08/532.20
  6. Step 6: Final answer
    x = 463.90

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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.