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Finding the Fourth Proportional to 31.01, 46.26 and 30.01

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Solution

The fourth proportional to 31.01, 46.26 and 30.01 is: 44.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31.01 : 46.26 = 30.01 : x
  2. Step 2: Convert to fraction form
    31.01/46.26 = 30.01/x
  3. Step 3: Cross multiply
    31.01x = 46.26 × 30.01
  4. Step 4: Simplify right side
    31.01x = 1,388.26
  5. Step 5: Solve for x
    x = 1,388.26/31.01
  6. Step 6: Final answer
    x = 44.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.