Home / 1,098.24-1,645.20-549.60

Finding the Fourth Proportional to 1,098.24, 1,645.20 and 549.60

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Solution

The fourth proportional to 1,098.24, 1,645.20 and 549.60 is: 823.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.24 : 1,645.20 = 549.60 : x
  2. Step 2: Convert to fraction form
    1,098.24/1,645.20 = 549.60/x
  3. Step 3: Cross multiply
    1,098.24x = 1,645.20 × 549.60
  4. Step 4: Simplify right side
    1,098.24x = 904,201.92
  5. Step 5: Solve for x
    x = 904,201.92/1,098.24
  6. Step 6: Final answer
    x = 823.32

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1.5x scale

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.