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Finding the Fourth Proportional to 35.93, 49.61 and 21.19

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Solution

The fourth proportional to 35.93, 49.61 and 21.19 is: 29.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.93 : 49.61 = 21.19 : x
  2. Step 2: Convert to fraction form
    35.93/49.61 = 21.19/x
  3. Step 3: Cross multiply
    35.93x = 49.61 × 21.19
  4. Step 4: Simplify right side
    35.93x = 1,051.01
  5. Step 5: Solve for x
    x = 1,051.01/35.93
  6. Step 6: Final answer
    x = 29.25

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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.