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Finding the Fourth Proportional to 44.21, 65.96 and 42.21

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Solution

The fourth proportional to 44.21, 65.96 and 42.21 is: 62.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.21 : 65.96 = 42.21 : x
  2. Step 2: Convert to fraction form
    44.21/65.96 = 42.21/x
  3. Step 3: Cross multiply
    44.21x = 65.96 × 42.21
  4. Step 4: Simplify right side
    44.21x = 2,783.96
  5. Step 5: Solve for x
    x = 2,783.96/44.21
  6. Step 6: Final answer
    x = 62.98

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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.