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Finding the Fourth Proportional to 1,241.45, 1,851.21 and 1,230.32

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Solution

The fourth proportional to 1,241.45, 1,851.21 and 1,230.32 is: 1,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.45 : 1,851.21 = 1,230.32 : x
  2. Step 2: Convert to fraction form
    1,241.45/1,851.21 = 1,230.32/x
  3. Step 3: Cross multiply
    1,241.45x = 1,851.21 × 1,230.32
  4. Step 4: Simplify right side
    1,241.45x = 2,277,580.69
  5. Step 5: Solve for x
    x = 2,277,580.69/1,241.45
  6. Step 6: Final answer
    x = 1,834.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.