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Finding the Fourth Proportional to 60.64, 91.34 and 54.68

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Solution

The fourth proportional to 60.64, 91.34 and 54.68 is: 82.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.64 : 91.34 = 54.68 : x
  2. Step 2: Convert to fraction form
    60.64/91.34 = 54.68/x
  3. Step 3: Cross multiply
    60.64x = 91.34 × 54.68
  4. Step 4: Simplify right side
    60.64x = 4,994.47
  5. Step 5: Solve for x
    x = 4,994.47/60.64
  6. Step 6: Final answer
    x = 82.36

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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.