Home / 1,086.02-1,629.10-355.60

Finding the Fourth Proportional to 1,086.02, 1,629.10 and 355.60

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Solution

The fourth proportional to 1,086.02, 1,629.10 and 355.60 is: 533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.02 : 1,629.10 = 355.60 : x
  2. Step 2: Convert to fraction form
    1,086.02/1,629.10 = 355.60/x
  3. Step 3: Cross multiply
    1,086.02x = 1,629.10 × 355.60
  4. Step 4: Simplify right side
    1,086.02x = 579,307.96
  5. Step 5: Solve for x
    x = 579,307.96/1,086.02
  6. Step 6: Final answer
    x = 533.42

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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.