Home / 1,479.78-2,219.49-384.05

Finding the Fourth Proportional to 1,479.78, 2,219.49 and 384.05

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Solution

The fourth proportional to 1,479.78, 2,219.49 and 384.05 is: 576.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.78 : 2,219.49 = 384.05 : x
  2. Step 2: Convert to fraction form
    1,479.78/2,219.49 = 384.05/x
  3. Step 3: Cross multiply
    1,479.78x = 2,219.49 × 384.05
  4. Step 4: Simplify right side
    1,479.78x = 852,384.04
  5. Step 5: Solve for x
    x = 852,384.04/1,479.78
  6. Step 6: Final answer
    x = 576.02

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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.