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Finding the Fourth Proportional to 1,674.99, 2,512.28 and 579.26

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Solution

The fourth proportional to 1,674.99, 2,512.28 and 579.26 is: 868.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.99 : 2,512.28 = 579.26 : x
  2. Step 2: Convert to fraction form
    1,674.99/2,512.28 = 579.26/x
  3. Step 3: Cross multiply
    1,674.99x = 2,512.28 × 579.26
  4. Step 4: Simplify right side
    1,674.99x = 1,455,271.04
  5. Step 5: Solve for x
    x = 1,455,271.04/1,674.99
  6. Step 6: Final answer
    x = 868.82

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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.