Home / 1,370.51-2,055.46-396.40

Finding the Fourth Proportional to 1,370.51, 2,055.46 and 396.40

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Solution

The fourth proportional to 1,370.51, 2,055.46 and 396.40 is: 594.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.51 : 2,055.46 = 396.40 : x
  2. Step 2: Convert to fraction form
    1,370.51/2,055.46 = 396.40/x
  3. Step 3: Cross multiply
    1,370.51x = 2,055.46 × 396.40
  4. Step 4: Simplify right side
    1,370.51x = 814,784.34
  5. Step 5: Solve for x
    x = 814,784.34/1,370.51
  6. Step 6: Final answer
    x = 594.51

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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.