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Finding the Fourth Proportional to 1,050.81, 1,450.07 and 578.70

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Solution

The fourth proportional to 1,050.81, 1,450.07 and 578.70 is: 798.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.81 : 1,450.07 = 578.70 : x
  2. Step 2: Convert to fraction form
    1,050.81/1,450.07 = 578.70/x
  3. Step 3: Cross multiply
    1,050.81x = 1,450.07 × 578.70
  4. Step 4: Simplify right side
    1,050.81x = 839,148.26
  5. Step 5: Solve for x
    x = 839,148.26/1,050.81
  6. Step 6: Final answer
    x = 798.58

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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.