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Finding the Fourth Proportional to 48.01, 72.08 and 21.01

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Solution

The fourth proportional to 48.01, 72.08 and 21.01 is: 31.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.01 : 72.08 = 21.01 : x
  2. Step 2: Convert to fraction form
    48.01/72.08 = 21.01/x
  3. Step 3: Cross multiply
    48.01x = 72.08 × 21.01
  4. Step 4: Simplify right side
    48.01x = 1,514.40
  5. Step 5: Solve for x
    x = 1,514.40/48.01
  6. Step 6: Final answer
    x = 31.54

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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.