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Finding the Fourth Proportional to 551.18, 826.16 and 242.98

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Solution

The fourth proportional to 551.18, 826.16 and 242.98 is: 364.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.18 : 826.16 = 242.98 : x
  2. Step 2: Convert to fraction form
    551.18/826.16 = 242.98/x
  3. Step 3: Cross multiply
    551.18x = 826.16 × 242.98
  4. Step 4: Simplify right side
    551.18x = 200,740.36
  5. Step 5: Solve for x
    x = 200,740.36/551.18
  6. Step 6: Final answer
    x = 364.20

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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.