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Finding the Fourth Proportional to 64.00, 88.25 and 45.54

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Solution

The fourth proportional to 64.00, 88.25 and 45.54 is: 62.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.00 : 88.25 = 45.54 : x
  2. Step 2: Convert to fraction form
    64.00/88.25 = 45.54/x
  3. Step 3: Cross multiply
    64.00x = 88.25 × 45.54
  4. Step 4: Simplify right side
    64.00x = 4,018.68
  5. Step 5: Solve for x
    x = 4,018.68/64.00
  6. Step 6: Final answer
    x = 62.79

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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.