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Finding the Fourth Proportional to 522.10, 784.89 and 369.12

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Solution

The fourth proportional to 522.10, 784.89 and 369.12 is: 554.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.10 : 784.89 = 369.12 : x
  2. Step 2: Convert to fraction form
    522.10/784.89 = 369.12/x
  3. Step 3: Cross multiply
    522.10x = 784.89 × 369.12
  4. Step 4: Simplify right side
    522.10x = 289,721.54
  5. Step 5: Solve for x
    x = 289,721.54/522.10
  6. Step 6: Final answer
    x = 554.91

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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.