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Finding the Fourth Proportional to 1,050.95, 1,579.91 and 745.00

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Solution

The fourth proportional to 1,050.95, 1,579.91 and 745.00 is: 1,119.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.95 : 1,579.91 = 745.00 : x
  2. Step 2: Convert to fraction form
    1,050.95/1,579.91 = 745.00/x
  3. Step 3: Cross multiply
    1,050.95x = 1,579.91 × 745.00
  4. Step 4: Simplify right side
    1,050.95x = 1,177,025.28
  5. Step 5: Solve for x
    x = 1,177,025.28/1,050.95
  6. Step 6: Final answer
    x = 1,119.96

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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.