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Finding the Fourth Proportional to 1,474.19, 2,210.84 and 693.42

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Solution

The fourth proportional to 1,474.19, 2,210.84 and 693.42 is: 1,039.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.19 : 2,210.84 = 693.42 : x
  2. Step 2: Convert to fraction form
    1,474.19/2,210.84 = 693.42/x
  3. Step 3: Cross multiply
    1,474.19x = 2,210.84 × 693.42
  4. Step 4: Simplify right side
    1,474.19x = 1,533,029.62
  5. Step 5: Solve for x
    x = 1,533,029.62/1,474.19
  6. Step 6: Final answer
    x = 1,039.91

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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.