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Finding the Fourth Proportional to 64.68, 88.89 and 58.41

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Solution

The fourth proportional to 64.68, 88.89 and 58.41 is: 80.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.68 : 88.89 = 58.41 : x
  2. Step 2: Convert to fraction form
    64.68/88.89 = 58.41/x
  3. Step 3: Cross multiply
    64.68x = 88.89 × 58.41
  4. Step 4: Simplify right side
    64.68x = 5,192.06
  5. Step 5: Solve for x
    x = 5,192.06/64.68
  6. Step 6: Final answer
    x = 80.27

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.