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Finding the Fourth Proportional to 1,479.66, 2,219.49 and 506.45

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Solution

The fourth proportional to 1,479.66, 2,219.49 and 506.45 is: 759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.66 : 2,219.49 = 506.45 : x
  2. Step 2: Convert to fraction form
    1,479.66/2,219.49 = 506.45/x
  3. Step 3: Cross multiply
    1,479.66x = 2,219.49 × 506.45
  4. Step 4: Simplify right side
    1,479.66x = 1,124,049.61
  5. Step 5: Solve for x
    x = 1,124,049.61/1,479.66
  6. Step 6: Final answer
    x = 759.67

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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.