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Finding the Fourth Proportional to 1,145.43, 1,718.84 and 652.54

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Solution

The fourth proportional to 1,145.43, 1,718.84 and 652.54 is: 979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.43 : 1,718.84 = 652.54 : x
  2. Step 2: Convert to fraction form
    1,145.43/1,718.84 = 652.54/x
  3. Step 3: Cross multiply
    1,145.43x = 1,718.84 × 652.54
  4. Step 4: Simplify right side
    1,145.43x = 1,121,611.85
  5. Step 5: Solve for x
    x = 1,121,611.85/1,145.43
  6. Step 6: Final answer
    x = 979.21

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.