Home / 1,479.95-2,220.70-699.55

Finding the Fourth Proportional to 1,479.95, 2,220.70 and 699.55

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Solution

The fourth proportional to 1,479.95, 2,220.70 and 699.55 is: 1,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.95 : 2,220.70 = 699.55 : x
  2. Step 2: Convert to fraction form
    1,479.95/2,220.70 = 699.55/x
  3. Step 3: Cross multiply
    1,479.95x = 2,220.70 × 699.55
  4. Step 4: Simplify right side
    1,479.95x = 1,553,483.38
  5. Step 5: Solve for x
    x = 1,553,483.38/1,479.95
  6. Step 6: Final answer
    x = 1,049.69

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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.