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Finding the Fourth Proportional to 615.69, 922.74 and 306.89

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Solution

The fourth proportional to 615.69, 922.74 and 306.89 is: 459.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.69 : 922.74 = 306.89 : x
  2. Step 2: Convert to fraction form
    615.69/922.74 = 306.89/x
  3. Step 3: Cross multiply
    615.69x = 922.74 × 306.89
  4. Step 4: Simplify right side
    615.69x = 283,175.06
  5. Step 5: Solve for x
    x = 283,175.06/615.69
  6. Step 6: Final answer
    x = 459.93

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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.