Home / 1,370.40-2,055.42-549.15

Finding the Fourth Proportional to 1,370.40, 2,055.42 and 549.15

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Solution

The fourth proportional to 1,370.40, 2,055.42 and 549.15 is: 823.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.40 : 2,055.42 = 549.15 : x
  2. Step 2: Convert to fraction form
    1,370.40/2,055.42 = 549.15/x
  3. Step 3: Cross multiply
    1,370.40x = 2,055.42 × 549.15
  4. Step 4: Simplify right side
    1,370.40x = 1,128,733.89
  5. Step 5: Solve for x
    x = 1,128,733.89/1,370.40
  6. Step 6: Final answer
    x = 823.65

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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.