Home / 1,360.16-2,040.58-435.80

Finding the Fourth Proportional to 1,360.16, 2,040.58 and 435.80

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Solution

The fourth proportional to 1,360.16, 2,040.58 and 435.80 is: 653.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.16 : 2,040.58 = 435.80 : x
  2. Step 2: Convert to fraction form
    1,360.16/2,040.58 = 435.80/x
  3. Step 3: Cross multiply
    1,360.16x = 2,040.58 × 435.80
  4. Step 4: Simplify right side
    1,360.16x = 889,284.76
  5. Step 5: Solve for x
    x = 889,284.76/1,360.16
  6. Step 6: Final answer
    x = 653.81

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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.