Home / 1,080.21-1,490.60-607.96

Finding the Fourth Proportional to 1,080.21, 1,490.60 and 607.96

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Solution

The fourth proportional to 1,080.21, 1,490.60 and 607.96 is: 838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.21 : 1,490.60 = 607.96 : x
  2. Step 2: Convert to fraction form
    1,080.21/1,490.60 = 607.96/x
  3. Step 3: Cross multiply
    1,080.21x = 1,490.60 × 607.96
  4. Step 4: Simplify right side
    1,080.21x = 906,220.17
  5. Step 5: Solve for x
    x = 906,220.17/1,080.21
  6. Step 6: Final answer
    x = 838.93

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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.