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Finding the Fourth Proportional to 611.58, 917.42 and 303.25

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Solution

The fourth proportional to 611.58, 917.42 and 303.25 is: 454.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.58 : 917.42 = 303.25 : x
  2. Step 2: Convert to fraction form
    611.58/917.42 = 303.25/x
  3. Step 3: Cross multiply
    611.58x = 917.42 × 303.25
  4. Step 4: Simplify right side
    611.58x = 278,207.62
  5. Step 5: Solve for x
    x = 278,207.62/611.58
  6. Step 6: Final answer
    x = 454.90

Related Problems

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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.