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Finding the Fourth Proportional to 655.69, 983.08 and 290.28

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Solution

The fourth proportional to 655.69, 983.08 and 290.28 is: 435.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.69 : 983.08 = 290.28 : x
  2. Step 2: Convert to fraction form
    655.69/983.08 = 290.28/x
  3. Step 3: Cross multiply
    655.69x = 983.08 × 290.28
  4. Step 4: Simplify right side
    655.69x = 285,367.01
  5. Step 5: Solve for x
    x = 285,367.01/655.69
  6. Step 6: Final answer
    x = 435.22

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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.