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Finding the Fourth Proportional to 290.66, 435.79 and 175.17

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Solution

The fourth proportional to 290.66, 435.79 and 175.17 is: 262.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.66 : 435.79 = 175.17 : x
  2. Step 2: Convert to fraction form
    290.66/435.79 = 175.17/x
  3. Step 3: Cross multiply
    290.66x = 435.79 × 175.17
  4. Step 4: Simplify right side
    290.66x = 76,336.46
  5. Step 5: Solve for x
    x = 76,336.46/290.66
  6. Step 6: Final answer
    x = 262.63

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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.