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Finding the Fourth Proportional to 30.00, 41.41 and 21.26

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Solution

The fourth proportional to 30.00, 41.41 and 21.26 is: 29.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.00 : 41.41 = 21.26 : x
  2. Step 2: Convert to fraction form
    30.00/41.41 = 21.26/x
  3. Step 3: Cross multiply
    30.00x = 41.41 × 21.26
  4. Step 4: Simplify right side
    30.00x = 880.51
  5. Step 5: Solve for x
    x = 880.51/30.00
  6. Step 6: Final answer
    x = 29.35

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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.