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Finding the Fourth Proportional to 615.48, 923.22 and 307.73

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Solution

The fourth proportional to 615.48, 923.22 and 307.73 is: 461.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.48 : 923.22 = 307.73 : x
  2. Step 2: Convert to fraction form
    615.48/923.22 = 307.73/x
  3. Step 3: Cross multiply
    615.48x = 923.22 × 307.73
  4. Step 4: Simplify right side
    615.48x = 284,097.87
  5. Step 5: Solve for x
    x = 284,097.87/615.48
  6. Step 6: Final answer
    x = 461.59

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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.