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Finding the Fourth Proportional to 1,074.66, 1,612.00 and 709.37

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Solution

The fourth proportional to 1,074.66, 1,612.00 and 709.37 is: 1,064.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.66 : 1,612.00 = 709.37 : x
  2. Step 2: Convert to fraction form
    1,074.66/1,612.00 = 709.37/x
  3. Step 3: Cross multiply
    1,074.66x = 1,612.00 × 709.37
  4. Step 4: Simplify right side
    1,074.66x = 1,143,497.55
  5. Step 5: Solve for x
    x = 1,143,497.55/1,074.66
  6. Step 6: Final answer
    x = 1,064.05

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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.