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Finding the Fourth Proportional to 611.74, 916.80 and 337.96

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Solution

The fourth proportional to 611.74, 916.80 and 337.96 is: 506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.74 : 916.80 = 337.96 : x
  2. Step 2: Convert to fraction form
    611.74/916.80 = 337.96/x
  3. Step 3: Cross multiply
    611.74x = 916.80 × 337.96
  4. Step 4: Simplify right side
    611.74x = 309,841.73
  5. Step 5: Solve for x
    x = 309,841.73/611.74
  6. Step 6: Final answer
    x = 506.49

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Double scale
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Similar ratio
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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.