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Finding the Fourth Proportional to 4.33, 6 and 4.21

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Solution

The fourth proportional to 4.33, 6 and 4.21 is: 5.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.33 : 6 = 4.21 : x
  2. Step 2: Convert to fraction form
    4.33/6 = 4.21/x
  3. Step 3: Cross multiply
    4.33x = 6 × 4.21
  4. Step 4: Simplify right side
    4.33x = 25.26
  5. Step 5: Solve for x
    x = 25.26/4.33
  6. Step 6: Final answer
    x = 5.83

Related Problems

Find fourth proportional to 2.17, 3 and 2.11
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Double scale
Find fourth proportional to 5.33, 7.39 and 5.21
Similar ratio
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1.5x scale

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.