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Finding the Fourth Proportional to 66.41, 92.00 and 63.57

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Solution

The fourth proportional to 66.41, 92.00 and 63.57 is: 88.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.41 : 92.00 = 63.57 : x
  2. Step 2: Convert to fraction form
    66.41/92.00 = 63.57/x
  3. Step 3: Cross multiply
    66.41x = 92.00 × 63.57
  4. Step 4: Simplify right side
    66.41x = 5,848.12
  5. Step 5: Solve for x
    x = 5,848.12/66.41
  6. Step 6: Final answer
    x = 88.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.