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Finding the Fourth Proportional to 641.93, 962.28 and 333.18

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Solution

The fourth proportional to 641.93, 962.28 and 333.18 is: 499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.93 : 962.28 = 333.18 : x
  2. Step 2: Convert to fraction form
    641.93/962.28 = 333.18/x
  3. Step 3: Cross multiply
    641.93x = 962.28 × 333.18
  4. Step 4: Simplify right side
    641.93x = 320,612.45
  5. Step 5: Solve for x
    x = 320,612.45/641.93
  6. Step 6: Final answer
    x = 499.45

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Double scale
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1.5x scale

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.