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Finding the Fourth Proportional to 3, 4.50 and 2.51

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Solution

The fourth proportional to 3, 4.50 and 2.51 is: 3.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3 : 4.50 = 2.51 : x
  2. Step 2: Convert to fraction form
    3/4.50 = 2.51/x
  3. Step 3: Cross multiply
    3x = 4.50 × 2.51
  4. Step 4: Simplify right side
    3x = 11.27
  5. Step 5: Solve for x
    x = 11.27/3
  6. Step 6: Final answer
    x = 3.76

Related Problems

Find fourth proportional to 1.50, 2.25 and 1.25
Half scale
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Double scale
Find fourth proportional to 4, 6 and 3.51
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.