Home / 1,190.02-1,641.45-717.60

Finding the Fourth Proportional to 1,190.02, 1,641.45 and 717.60

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Solution

The fourth proportional to 1,190.02, 1,641.45 and 717.60 is: 989.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.02 : 1,641.45 = 717.60 : x
  2. Step 2: Convert to fraction form
    1,190.02/1,641.45 = 717.60/x
  3. Step 3: Cross multiply
    1,190.02x = 1,641.45 × 717.60
  4. Step 4: Simplify right side
    1,190.02x = 1,177,904.52
  5. Step 5: Solve for x
    x = 1,177,904.52/1,190.02
  6. Step 6: Final answer
    x = 989.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.