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Finding the Fourth Proportional to 940.32, 1,410.30 and 453.96

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Solution

The fourth proportional to 940.32, 1,410.30 and 453.96 is: 680.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.32 : 1,410.30 = 453.96 : x
  2. Step 2: Convert to fraction form
    940.32/1,410.30 = 453.96/x
  3. Step 3: Cross multiply
    940.32x = 1,410.30 × 453.96
  4. Step 4: Simplify right side
    940.32x = 640,219.79
  5. Step 5: Solve for x
    x = 640,219.79/940.32
  6. Step 6: Final answer
    x = 680.85

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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.