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Finding the Fourth Proportional to 1,364, 1,882.32 and 812.32

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Solution

The fourth proportional to 1,364, 1,882.32 and 812.32 is: 1,121.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364 : 1,882.32 = 812.32 : x
  2. Step 2: Convert to fraction form
    1,364/1,882.32 = 812.32/x
  3. Step 3: Cross multiply
    1,364x = 1,882.32 × 812.32
  4. Step 4: Simplify right side
    1,364x = 1,529,046.18
  5. Step 5: Solve for x
    x = 1,529,046.18/1,364
  6. Step 6: Final answer
    x = 1,121.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.