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Finding the Fourth Proportional to 615.08, 922.64 and 306.84

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Solution

The fourth proportional to 615.08, 922.64 and 306.84 is: 460.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.08 : 922.64 = 306.84 : x
  2. Step 2: Convert to fraction form
    615.08/922.64 = 306.84/x
  3. Step 3: Cross multiply
    615.08x = 922.64 × 306.84
  4. Step 4: Simplify right side
    615.08x = 283,102.86
  5. Step 5: Solve for x
    x = 283,102.86/615.08
  6. Step 6: Final answer
    x = 460.27

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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.