Home / 1,090.10-1,635.28-359.52

Finding the Fourth Proportional to 1,090.10, 1,635.28 and 359.52

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Solution

The fourth proportional to 1,090.10, 1,635.28 and 359.52 is: 539.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.10 : 1,635.28 = 359.52 : x
  2. Step 2: Convert to fraction form
    1,090.10/1,635.28 = 359.52/x
  3. Step 3: Cross multiply
    1,090.10x = 1,635.28 × 359.52
  4. Step 4: Simplify right side
    1,090.10x = 587,915.87
  5. Step 5: Solve for x
    x = 587,915.87/1,090.10
  6. Step 6: Final answer
    x = 539.32

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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.