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Finding the Fourth Proportional to 1,579.68, 2,369.34 and 746.55

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Solution

The fourth proportional to 1,579.68, 2,369.34 and 746.55 is: 1,119.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.68 : 2,369.34 = 746.55 : x
  2. Step 2: Convert to fraction form
    1,579.68/2,369.34 = 746.55/x
  3. Step 3: Cross multiply
    1,579.68x = 2,369.34 × 746.55
  4. Step 4: Simplify right side
    1,579.68x = 1,768,830.78
  5. Step 5: Solve for x
    x = 1,768,830.78/1,579.68
  6. Step 6: Final answer
    x = 1,119.74

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1.5x scale

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.