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Finding the Fourth Proportional to 551.83, 826.98 and 243.22

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Solution

The fourth proportional to 551.83, 826.98 and 243.22 is: 364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.83 : 826.98 = 243.22 : x
  2. Step 2: Convert to fraction form
    551.83/826.98 = 243.22/x
  3. Step 3: Cross multiply
    551.83x = 826.98 × 243.22
  4. Step 4: Simplify right side
    551.83x = 201,138.08
  5. Step 5: Solve for x
    x = 201,138.08/551.83
  6. Step 6: Final answer
    x = 364.49

Related Problems

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Double scale
Find fourth proportional to 552.83, 828.48 and 244.22
Similar ratio
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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.