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Finding the Fourth Proportional to 615.19, 922.30 and 306.88

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Solution

The fourth proportional to 615.19, 922.30 and 306.88 is: 460.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.19 : 922.30 = 306.88 : x
  2. Step 2: Convert to fraction form
    615.19/922.30 = 306.88/x
  3. Step 3: Cross multiply
    615.19x = 922.30 × 306.88
  4. Step 4: Simplify right side
    615.19x = 283,036.96
  5. Step 5: Solve for x
    x = 283,036.96/615.19
  6. Step 6: Final answer
    x = 460.08

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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.