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Finding the Fourth Proportional to 290.66, 435.32 and 169.03

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Solution

The fourth proportional to 290.66, 435.32 and 169.03 is: 253.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.66 : 435.32 = 169.03 : x
  2. Step 2: Convert to fraction form
    290.66/435.32 = 169.03/x
  3. Step 3: Cross multiply
    290.66x = 435.32 × 169.03
  4. Step 4: Simplify right side
    290.66x = 73,579.12
  5. Step 5: Solve for x
    x = 73,579.12/290.66
  6. Step 6: Final answer
    x = 253.14

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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.