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Finding the Fourth Proportional to 1,652.75, 2,479.19 and 613.01

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Solution

The fourth proportional to 1,652.75, 2,479.19 and 613.01 is: 919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,652.75 : 2,479.19 = 613.01 : x
  2. Step 2: Convert to fraction form
    1,652.75/2,479.19 = 613.01/x
  3. Step 3: Cross multiply
    1,652.75x = 2,479.19 × 613.01
  4. Step 4: Simplify right side
    1,652.75x = 1,519,771.39
  5. Step 5: Solve for x
    x = 1,519,771.39/1,652.75
  6. Step 6: Final answer
    x = 919.54

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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.