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Finding the Fourth Proportional to 1,193.94, 1,790.30 and 545.13

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Solution

The fourth proportional to 1,193.94, 1,790.30 and 545.13 is: 817.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.94 : 1,790.30 = 545.13 : x
  2. Step 2: Convert to fraction form
    1,193.94/1,790.30 = 545.13/x
  3. Step 3: Cross multiply
    1,193.94x = 1,790.30 × 545.13
  4. Step 4: Simplify right side
    1,193.94x = 975,947.60
  5. Step 5: Solve for x
    x = 975,947.60/1,193.94
  6. Step 6: Final answer
    x = 817.42

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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.