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Finding the Fourth Proportional to 60.30, 82.96 and 55.50

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Solution

The fourth proportional to 60.30, 82.96 and 55.50 is: 76.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.30 : 82.96 = 55.50 : x
  2. Step 2: Convert to fraction form
    60.30/82.96 = 55.50/x
  3. Step 3: Cross multiply
    60.30x = 82.96 × 55.50
  4. Step 4: Simplify right side
    60.30x = 4,604.28
  5. Step 5: Solve for x
    x = 4,604.28/60.30
  6. Step 6: Final answer
    x = 76.36

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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.