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Finding the Fourth Proportional to 615.88, 923.68 and 205.05

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Solution

The fourth proportional to 615.88, 923.68 and 205.05 is: 307.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.88 : 923.68 = 205.05 : x
  2. Step 2: Convert to fraction form
    615.88/923.68 = 205.05/x
  3. Step 3: Cross multiply
    615.88x = 923.68 × 205.05
  4. Step 4: Simplify right side
    615.88x = 189,404.30
  5. Step 5: Solve for x
    x = 189,404.30/615.88
  6. Step 6: Final answer
    x = 307.53

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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.