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Finding the Fourth Proportional to 1,478.99, 2,038.88 and 1,163.71

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Solution

The fourth proportional to 1,478.99, 2,038.88 and 1,163.71 is: 1,604.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.99 : 2,038.88 = 1,163.71 : x
  2. Step 2: Convert to fraction form
    1,478.99/2,038.88 = 1,163.71/x
  3. Step 3: Cross multiply
    1,478.99x = 2,038.88 × 1,163.71
  4. Step 4: Simplify right side
    1,478.99x = 2,372,657.76
  5. Step 5: Solve for x
    x = 2,372,657.76/1,478.99
  6. Step 6: Final answer
    x = 1,604.24

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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.