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Finding the Fourth Proportional to 1,094.82, 1,639.35 and 605.40

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Solution

The fourth proportional to 1,094.82, 1,639.35 and 605.40 is: 906.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.82 : 1,639.35 = 605.40 : x
  2. Step 2: Convert to fraction form
    1,094.82/1,639.35 = 605.40/x
  3. Step 3: Cross multiply
    1,094.82x = 1,639.35 × 605.40
  4. Step 4: Simplify right side
    1,094.82x = 992,462.49
  5. Step 5: Solve for x
    x = 992,462.49/1,094.82
  6. Step 6: Final answer
    x = 906.51

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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.