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Finding the Fourth Proportional to 400.21, 552.21 and 252.77

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Solution

The fourth proportional to 400.21, 552.21 and 252.77 is: 348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.21 : 552.21 = 252.77 : x
  2. Step 2: Convert to fraction form
    400.21/552.21 = 252.77/x
  3. Step 3: Cross multiply
    400.21x = 552.21 × 252.77
  4. Step 4: Simplify right side
    400.21x = 139,579.36
  5. Step 5: Solve for x
    x = 139,579.36/400.21
  6. Step 6: Final answer
    x = 348.76

Related Problems

Find fourth proportional to 200.11, 276.11 and 126.38
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Double scale
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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.