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Finding the Fourth Proportional to 55.01, 82.49 and 32.20

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Solution

The fourth proportional to 55.01, 82.49 and 32.20 is: 48.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.01 : 82.49 = 32.20 : x
  2. Step 2: Convert to fraction form
    55.01/82.49 = 32.20/x
  3. Step 3: Cross multiply
    55.01x = 82.49 × 32.20
  4. Step 4: Simplify right side
    55.01x = 2,655.77
  5. Step 5: Solve for x
    x = 2,655.77/55.01
  6. Step 6: Final answer
    x = 48.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.