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Finding the Fourth Proportional to 1,360.52, 2,040.91 and 435.84

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Solution

The fourth proportional to 1,360.52, 2,040.91 and 435.84 is: 653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.52 : 2,040.91 = 435.84 : x
  2. Step 2: Convert to fraction form
    1,360.52/2,040.91 = 435.84/x
  3. Step 3: Cross multiply
    1,360.52x = 2,040.91 × 435.84
  4. Step 4: Simplify right side
    1,360.52x = 889,510.21
  5. Step 5: Solve for x
    x = 889,510.21/1,360.52
  6. Step 6: Final answer
    x = 653.80

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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.