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Finding the Fourth Proportional to 790.50, 1,090.89 and 441.26

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Solution

The fourth proportional to 790.50, 1,090.89 and 441.26 is: 608.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    790.50 : 1,090.89 = 441.26 : x
  2. Step 2: Convert to fraction form
    790.50/1,090.89 = 441.26/x
  3. Step 3: Cross multiply
    790.50x = 1,090.89 × 441.26
  4. Step 4: Simplify right side
    790.50x = 481,360.67
  5. Step 5: Solve for x
    x = 481,360.67/790.50
  6. Step 6: Final answer
    x = 608.93

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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.