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Finding the Fourth Proportional to 301.65, 416.31 and 170.70

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Solution

The fourth proportional to 301.65, 416.31 and 170.70 is: 235.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.65 : 416.31 = 170.70 : x
  2. Step 2: Convert to fraction form
    301.65/416.31 = 170.70/x
  3. Step 3: Cross multiply
    301.65x = 416.31 × 170.70
  4. Step 4: Simplify right side
    301.65x = 71,064.12
  5. Step 5: Solve for x
    x = 71,064.12/301.65
  6. Step 6: Final answer
    x = 235.58

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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.