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Finding the Fourth Proportional to 551.12, 826.82 and 307.82

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Solution

The fourth proportional to 551.12, 826.82 and 307.82 is: 461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.12 : 826.82 = 307.82 : x
  2. Step 2: Convert to fraction form
    551.12/826.82 = 307.82/x
  3. Step 3: Cross multiply
    551.12x = 826.82 × 307.82
  4. Step 4: Simplify right side
    551.12x = 254,506.06
  5. Step 5: Solve for x
    x = 254,506.06/551.12
  6. Step 6: Final answer
    x = 461.80

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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.