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Finding the Fourth Proportional to 633.68, 874.39 and 353.92

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Solution

The fourth proportional to 633.68, 874.39 and 353.92 is: 488.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.68 : 874.39 = 353.92 : x
  2. Step 2: Convert to fraction form
    633.68/874.39 = 353.92/x
  3. Step 3: Cross multiply
    633.68x = 874.39 × 353.92
  4. Step 4: Simplify right side
    633.68x = 309,464.11
  5. Step 5: Solve for x
    x = 309,464.11/633.68
  6. Step 6: Final answer
    x = 488.36

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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.