Home / 1,370.40-2,055.98-396.60

Finding the Fourth Proportional to 1,370.40, 2,055.98 and 396.60

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Solution

The fourth proportional to 1,370.40, 2,055.98 and 396.60 is: 595.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.40 : 2,055.98 = 396.60 : x
  2. Step 2: Convert to fraction form
    1,370.40/2,055.98 = 396.60/x
  3. Step 3: Cross multiply
    1,370.40x = 2,055.98 × 396.60
  4. Step 4: Simplify right side
    1,370.40x = 815,401.67
  5. Step 5: Solve for x
    x = 815,401.67/1,370.40
  6. Step 6: Final answer
    x = 595.01

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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.