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Finding the Fourth Proportional to 92.23, 127.37 and 64.67

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Solution

The fourth proportional to 92.23, 127.37 and 64.67 is: 89.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.23 : 127.37 = 64.67 : x
  2. Step 2: Convert to fraction form
    92.23/127.37 = 64.67/x
  3. Step 3: Cross multiply
    92.23x = 127.37 × 64.67
  4. Step 4: Simplify right side
    92.23x = 8,237.02
  5. Step 5: Solve for x
    x = 8,237.02/92.23
  6. Step 6: Final answer
    x = 89.31

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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.