Home / 1,479.85-2,219.79-384.15

Finding the Fourth Proportional to 1,479.85, 2,219.79 and 384.15

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Solution

The fourth proportional to 1,479.85, 2,219.79 and 384.15 is: 576.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.85 : 2,219.79 = 384.15 : x
  2. Step 2: Convert to fraction form
    1,479.85/2,219.79 = 384.15/x
  3. Step 3: Cross multiply
    1,479.85x = 2,219.79 × 384.15
  4. Step 4: Simplify right side
    1,479.85x = 852,719.31
  5. Step 5: Solve for x
    x = 852,719.31/1,479.85
  6. Step 6: Final answer
    x = 576.22

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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.