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Finding the Fourth Proportional to 1,342.21, 2,016.41 and 953.19

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Solution

The fourth proportional to 1,342.21, 2,016.41 and 953.19 is: 1,431.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.21 : 2,016.41 = 953.19 : x
  2. Step 2: Convert to fraction form
    1,342.21/2,016.41 = 953.19/x
  3. Step 3: Cross multiply
    1,342.21x = 2,016.41 × 953.19
  4. Step 4: Simplify right side
    1,342.21x = 1,922,021.85
  5. Step 5: Solve for x
    x = 1,922,021.85/1,342.21
  6. Step 6: Final answer
    x = 1,431.98

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1.5x scale

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.