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Finding the Fourth Proportional to 611.82, 916.58 and 303.22

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Solution

The fourth proportional to 611.82, 916.58 and 303.22 is: 454.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.82 : 916.58 = 303.22 : x
  2. Step 2: Convert to fraction form
    611.82/916.58 = 303.22/x
  3. Step 3: Cross multiply
    611.82x = 916.58 × 303.22
  4. Step 4: Simplify right side
    611.82x = 277,925.39
  5. Step 5: Solve for x
    x = 277,925.39/611.82
  6. Step 6: Final answer
    x = 454.26

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Double scale
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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.