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Finding the Fourth Proportional to 64.41, 97.15 and 60.67

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Solution

The fourth proportional to 64.41, 97.15 and 60.67 is: 91.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.41 : 97.15 = 60.67 : x
  2. Step 2: Convert to fraction form
    64.41/97.15 = 60.67/x
  3. Step 3: Cross multiply
    64.41x = 97.15 × 60.67
  4. Step 4: Simplify right side
    64.41x = 5,893.60
  5. Step 5: Solve for x
    x = 5,893.60/64.41
  6. Step 6: Final answer
    x = 91.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.