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Finding the Fourth Proportional to 1,033.60, 1,425.73 and 613.67

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Solution

The fourth proportional to 1,033.60, 1,425.73 and 613.67 is: 846.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.60 : 1,425.73 = 613.67 : x
  2. Step 2: Convert to fraction form
    1,033.60/1,425.73 = 613.67/x
  3. Step 3: Cross multiply
    1,033.60x = 1,425.73 × 613.67
  4. Step 4: Simplify right side
    1,033.60x = 874,927.73
  5. Step 5: Solve for x
    x = 874,927.73/1,033.60
  6. Step 6: Final answer
    x = 846.49

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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.