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Finding the Fourth Proportional to 66.96, 93.30 and 66.96

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Solution

The fourth proportional to 66.96, 93.30 and 66.96 is: 93.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.96 : 93.30 = 66.96 : x
  2. Step 2: Convert to fraction form
    66.96/93.30 = 66.96/x
  3. Step 3: Cross multiply
    66.96x = 93.30 × 66.96
  4. Step 4: Simplify right side
    66.96x = 6,247.37
  5. Step 5: Solve for x
    x = 6,247.37/66.96
  6. Step 6: Final answer
    x = 93.30

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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.