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Finding the Fourth Proportional to 633.09, 873.70 and 353.39

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Solution

The fourth proportional to 633.09, 873.70 and 353.39 is: 487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.09 : 873.70 = 353.39 : x
  2. Step 2: Convert to fraction form
    633.09/873.70 = 353.39/x
  3. Step 3: Cross multiply
    633.09x = 873.70 × 353.39
  4. Step 4: Simplify right side
    633.09x = 308,760.07
  5. Step 5: Solve for x
    x = 308,760.07/633.09
  6. Step 6: Final answer
    x = 487.70

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1.5x scale

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.