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Finding the Fourth Proportional to 401.66, 602.57 and 170.55

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Solution

The fourth proportional to 401.66, 602.57 and 170.55 is: 255.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.66 : 602.57 = 170.55 : x
  2. Step 2: Convert to fraction form
    401.66/602.57 = 170.55/x
  3. Step 3: Cross multiply
    401.66x = 602.57 × 170.55
  4. Step 4: Simplify right side
    401.66x = 102,768.31
  5. Step 5: Solve for x
    x = 102,768.31/401.66
  6. Step 6: Final answer
    x = 255.86

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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.