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Finding the Fourth Proportional to 45.21, 62.81 and 44.79

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Solution

The fourth proportional to 45.21, 62.81 and 44.79 is: 62.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.21 : 62.81 = 44.79 : x
  2. Step 2: Convert to fraction form
    45.21/62.81 = 44.79/x
  3. Step 3: Cross multiply
    45.21x = 62.81 × 44.79
  4. Step 4: Simplify right side
    45.21x = 2,812.99
  5. Step 5: Solve for x
    x = 2,812.99/45.21
  6. Step 6: Final answer
    x = 62.22

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Find fourth proportional to 22.61, 31.40 and 22.39
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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.