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Finding the Fourth Proportional to 64.37, 96.36 and 53.57

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Solution

The fourth proportional to 64.37, 96.36 and 53.57 is: 80.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.37 : 96.36 = 53.57 : x
  2. Step 2: Convert to fraction form
    64.37/96.36 = 53.57/x
  3. Step 3: Cross multiply
    64.37x = 96.36 × 53.57
  4. Step 4: Simplify right side
    64.37x = 5,161.52
  5. Step 5: Solve for x
    x = 5,161.52/64.37
  6. Step 6: Final answer
    x = 80.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.