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Finding the Fourth Proportional to 59.64, 82.28 and 40.28

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Solution

The fourth proportional to 59.64, 82.28 and 40.28 is: 55.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.64 : 82.28 = 40.28 : x
  2. Step 2: Convert to fraction form
    59.64/82.28 = 40.28/x
  3. Step 3: Cross multiply
    59.64x = 82.28 × 40.28
  4. Step 4: Simplify right side
    59.64x = 3,314.24
  5. Step 5: Solve for x
    x = 3,314.24/59.64
  6. Step 6: Final answer
    x = 55.57

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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.