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Finding the Fourth Proportional to 1,297.92, 1,945.72 and 476.00

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Solution

The fourth proportional to 1,297.92, 1,945.72 and 476.00 is: 713.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.92 : 1,945.72 = 476.00 : x
  2. Step 2: Convert to fraction form
    1,297.92/1,945.72 = 476.00/x
  3. Step 3: Cross multiply
    1,297.92x = 1,945.72 × 476.00
  4. Step 4: Simplify right side
    1,297.92x = 926,154.56
  5. Step 5: Solve for x
    x = 926,154.56/1,297.92
  6. Step 6: Final answer
    x = 713.57

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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.