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Finding the Fourth Proportional to 894.75, 1,338.66 and 619.99

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Solution

The fourth proportional to 894.75, 1,338.66 and 619.99 is: 927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.75 : 1,338.66 = 619.99 : x
  2. Step 2: Convert to fraction form
    894.75/1,338.66 = 619.99/x
  3. Step 3: Cross multiply
    894.75x = 1,338.66 × 619.99
  4. Step 4: Simplify right side
    894.75x = 829,952.47
  5. Step 5: Solve for x
    x = 829,952.47/894.75
  6. Step 6: Final answer
    x = 927.58

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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.