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Finding the Fourth Proportional to 1,090.36, 1,504.62 and 618.34

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Solution

The fourth proportional to 1,090.36, 1,504.62 and 618.34 is: 853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.36 : 1,504.62 = 618.34 : x
  2. Step 2: Convert to fraction form
    1,090.36/1,504.62 = 618.34/x
  3. Step 3: Cross multiply
    1,090.36x = 1,504.62 × 618.34
  4. Step 4: Simplify right side
    1,090.36x = 930,366.73
  5. Step 5: Solve for x
    x = 930,366.73/1,090.36
  6. Step 6: Final answer
    x = 853.27

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1.5x scale

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.