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Finding the Fourth Proportional to 726.25, 1,090.05 and 336.46

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Solution

The fourth proportional to 726.25, 1,090.05 and 336.46 is: 505.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.25 : 1,090.05 = 336.46 : x
  2. Step 2: Convert to fraction form
    726.25/1,090.05 = 336.46/x
  3. Step 3: Cross multiply
    726.25x = 1,090.05 × 336.46
  4. Step 4: Simplify right side
    726.25x = 366,758.22
  5. Step 5: Solve for x
    x = 366,758.22/726.25
  6. Step 6: Final answer
    x = 505.00

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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.