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Finding the Fourth Proportional to 1,745.45, 2,408.54 and 999.34

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Solution

The fourth proportional to 1,745.45, 2,408.54 and 999.34 is: 1,378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.45 : 2,408.54 = 999.34 : x
  2. Step 2: Convert to fraction form
    1,745.45/2,408.54 = 999.34/x
  3. Step 3: Cross multiply
    1,745.45x = 2,408.54 × 999.34
  4. Step 4: Simplify right side
    1,745.45x = 2,406,939.35
  5. Step 5: Solve for x
    x = 2,406,939.35/1,745.45
  6. Step 6: Final answer
    x = 1,378.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.