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Finding the Fourth Proportional to 609.93, 914.90 and 353.25

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Solution

The fourth proportional to 609.93, 914.90 and 353.25 is: 529.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.93 : 914.90 = 353.25 : x
  2. Step 2: Convert to fraction form
    609.93/914.90 = 353.25/x
  3. Step 3: Cross multiply
    609.93x = 914.90 × 353.25
  4. Step 4: Simplify right side
    609.93x = 323,186.66
  5. Step 5: Solve for x
    x = 323,186.66/609.93
  6. Step 6: Final answer
    x = 529.88

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Half scale
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Double scale
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Similar ratio
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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.