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Finding the Fourth Proportional to 854.01, 1,280.93 and 306.14

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Solution

The fourth proportional to 854.01, 1,280.93 and 306.14 is: 459.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.01 : 1,280.93 = 306.14 : x
  2. Step 2: Convert to fraction form
    854.01/1,280.93 = 306.14/x
  3. Step 3: Cross multiply
    854.01x = 1,280.93 × 306.14
  4. Step 4: Simplify right side
    854.01x = 392,135.97
  5. Step 5: Solve for x
    x = 392,135.97/854.01
  6. Step 6: Final answer
    x = 459.17

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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.