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Finding the Fourth Proportional to 633.47, 874.19 and 353.69

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Solution

The fourth proportional to 633.47, 874.19 and 353.69 is: 488.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.47 : 874.19 = 353.69 : x
  2. Step 2: Convert to fraction form
    633.47/874.19 = 353.69/x
  3. Step 3: Cross multiply
    633.47x = 874.19 × 353.69
  4. Step 4: Simplify right side
    633.47x = 309,190.49
  5. Step 5: Solve for x
    x = 309,190.49/633.47
  6. Step 6: Final answer
    x = 488.09

Related Problems

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Half scale
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Double scale
Find fourth proportional to 634.47, 875.57 and 354.69
Similar ratio
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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.