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Finding the Fourth Proportional to 436.85, 655.54 and 231.57

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Solution

The fourth proportional to 436.85, 655.54 and 231.57 is: 347.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.85 : 655.54 = 231.57 : x
  2. Step 2: Convert to fraction form
    436.85/655.54 = 231.57/x
  3. Step 3: Cross multiply
    436.85x = 655.54 × 231.57
  4. Step 4: Simplify right side
    436.85x = 151,802.24
  5. Step 5: Solve for x
    x = 151,802.24/436.85
  6. Step 6: Final answer
    x = 347.50

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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.