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Finding the Fourth Proportional to 912.38, 1,368.84 and 296.08

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Solution

The fourth proportional to 912.38, 1,368.84 and 296.08 is: 444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.38 : 1,368.84 = 296.08 : x
  2. Step 2: Convert to fraction form
    912.38/1,368.84 = 296.08/x
  3. Step 3: Cross multiply
    912.38x = 1,368.84 × 296.08
  4. Step 4: Simplify right side
    912.38x = 405,286.15
  5. Step 5: Solve for x
    x = 405,286.15/912.38
  6. Step 6: Final answer
    x = 444.21

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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.