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Finding the Fourth Proportional to 790.44, 1,090.80 and 441.06

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Solution

The fourth proportional to 790.44, 1,090.80 and 441.06 is: 608.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    790.44 : 1,090.80 = 441.06 : x
  2. Step 2: Convert to fraction form
    790.44/1,090.80 = 441.06/x
  3. Step 3: Cross multiply
    790.44x = 1,090.80 × 441.06
  4. Step 4: Simplify right side
    790.44x = 481,108.25
  5. Step 5: Solve for x
    x = 481,108.25/790.44
  6. Step 6: Final answer
    x = 608.66

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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.