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Finding the Fourth Proportional to 1,639.01, 2,458.52 and 484.67

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Solution

The fourth proportional to 1,639.01, 2,458.52 and 484.67 is: 727.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.01 : 2,458.52 = 484.67 : x
  2. Step 2: Convert to fraction form
    1,639.01/2,458.52 = 484.67/x
  3. Step 3: Cross multiply
    1,639.01x = 2,458.52 × 484.67
  4. Step 4: Simplify right side
    1,639.01x = 1,191,570.89
  5. Step 5: Solve for x
    x = 1,191,570.89/1,639.01
  6. Step 6: Final answer
    x = 727.01

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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.