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Finding the Fourth Proportional to 675.09, 930.42 and 453.42

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Solution

The fourth proportional to 675.09, 930.42 and 453.42 is: 624.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.09 : 930.42 = 453.42 : x
  2. Step 2: Convert to fraction form
    675.09/930.42 = 453.42/x
  3. Step 3: Cross multiply
    675.09x = 930.42 × 453.42
  4. Step 4: Simplify right side
    675.09x = 421,871.04
  5. Step 5: Solve for x
    x = 421,871.04/675.09
  6. Step 6: Final answer
    x = 624.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.