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Finding the Fourth Proportional to 907.92, 1,362.06 and 330.84

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Solution

The fourth proportional to 907.92, 1,362.06 and 330.84 is: 496.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.92 : 1,362.06 = 330.84 : x
  2. Step 2: Convert to fraction form
    907.92/1,362.06 = 330.84/x
  3. Step 3: Cross multiply
    907.92x = 1,362.06 × 330.84
  4. Step 4: Simplify right side
    907.92x = 450,623.93
  5. Step 5: Solve for x
    x = 450,623.93/907.92
  6. Step 6: Final answer
    x = 496.33

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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.