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Finding the Fourth Proportional to 64.54, 96.26 and 58.21

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Solution

The fourth proportional to 64.54, 96.26 and 58.21 is: 86.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.54 : 96.26 = 58.21 : x
  2. Step 2: Convert to fraction form
    64.54/96.26 = 58.21/x
  3. Step 3: Cross multiply
    64.54x = 96.26 × 58.21
  4. Step 4: Simplify right side
    64.54x = 5,603.29
  5. Step 5: Solve for x
    x = 5,603.29/64.54
  6. Step 6: Final answer
    x = 86.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.