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Finding the Fourth Proportional to 737.70, 1,017.87 and 439.05

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Solution

The fourth proportional to 737.70, 1,017.87 and 439.05 is: 605.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.70 : 1,017.87 = 439.05 : x
  2. Step 2: Convert to fraction form
    737.70/1,017.87 = 439.05/x
  3. Step 3: Cross multiply
    737.70x = 1,017.87 × 439.05
  4. Step 4: Simplify right side
    737.70x = 446,895.82
  5. Step 5: Solve for x
    x = 446,895.82/737.70
  6. Step 6: Final answer
    x = 605.80

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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.