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Finding the Fourth Proportional to 436.40, 654.58 and 230.88

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Solution

The fourth proportional to 436.40, 654.58 and 230.88 is: 346.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.40 : 654.58 = 230.88 : x
  2. Step 2: Convert to fraction form
    436.40/654.58 = 230.88/x
  3. Step 3: Cross multiply
    436.40x = 654.58 × 230.88
  4. Step 4: Simplify right side
    436.40x = 151,129.43
  5. Step 5: Solve for x
    x = 151,129.43/436.40
  6. Step 6: Final answer
    x = 346.31

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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.