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Finding the Fourth Proportional to 551.21, 826.34 and 277.16

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Solution

The fourth proportional to 551.21, 826.34 and 277.16 is: 415.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.21 : 826.34 = 277.16 : x
  2. Step 2: Convert to fraction form
    551.21/826.34 = 277.16/x
  3. Step 3: Cross multiply
    551.21x = 826.34 × 277.16
  4. Step 4: Simplify right side
    551.21x = 229,022.88
  5. Step 5: Solve for x
    x = 229,022.88/551.21
  6. Step 6: Final answer
    x = 415.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 552.21, 827.83 and 278.16
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.