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Finding the Fourth Proportional to 436.59, 655.06 and 263.36

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Solution

The fourth proportional to 436.59, 655.06 and 263.36 is: 395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.59 : 655.06 = 263.36 : x
  2. Step 2: Convert to fraction form
    436.59/655.06 = 263.36/x
  3. Step 3: Cross multiply
    436.59x = 655.06 × 263.36
  4. Step 4: Simplify right side
    436.59x = 172,516.60
  5. Step 5: Solve for x
    x = 172,516.60/436.59
  6. Step 6: Final answer
    x = 395.15

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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.