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Finding the Fourth Proportional to 436.54, 650.99 and 427.18

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Solution

The fourth proportional to 436.54, 650.99 and 427.18 is: 637.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.54 : 650.99 = 427.18 : x
  2. Step 2: Convert to fraction form
    436.54/650.99 = 427.18/x
  3. Step 3: Cross multiply
    436.54x = 650.99 × 427.18
  4. Step 4: Simplify right side
    436.54x = 278,089.91
  5. Step 5: Solve for x
    x = 278,089.91/436.54
  6. Step 6: Final answer
    x = 637.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.