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Finding the Fourth Proportional to 66.94, 92.35 and 43.66

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Solution

The fourth proportional to 66.94, 92.35 and 43.66 is: 60.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.94 : 92.35 = 43.66 : x
  2. Step 2: Convert to fraction form
    66.94/92.35 = 43.66/x
  3. Step 3: Cross multiply
    66.94x = 92.35 × 43.66
  4. Step 4: Simplify right side
    66.94x = 4,031.41
  5. Step 5: Solve for x
    x = 4,031.41/66.94
  6. Step 6: Final answer
    x = 60.23

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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.