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Finding the Fourth Proportional to 1,011.94, 1,518.13 and 573.40

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Solution

The fourth proportional to 1,011.94, 1,518.13 and 573.40 is: 860.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.94 : 1,518.13 = 573.40 : x
  2. Step 2: Convert to fraction form
    1,011.94/1,518.13 = 573.40/x
  3. Step 3: Cross multiply
    1,011.94x = 1,518.13 × 573.40
  4. Step 4: Simplify right side
    1,011.94x = 870,489.08
  5. Step 5: Solve for x
    x = 870,489.08/1,011.94
  6. Step 6: Final answer
    x = 860.22

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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.