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Finding the Fourth Proportional to 615.57, 922.86 and 307.25

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Solution

The fourth proportional to 615.57, 922.86 and 307.25 is: 460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.57 : 922.86 = 307.25 : x
  2. Step 2: Convert to fraction form
    615.57/922.86 = 307.25/x
  3. Step 3: Cross multiply
    615.57x = 922.86 × 307.25
  4. Step 4: Simplify right side
    615.57x = 283,546.43
  5. Step 5: Solve for x
    x = 283,546.43/615.57
  6. Step 6: Final answer
    x = 460.63

Related Problems

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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.