Home / 1,208.11-1,810.32-558.10

Finding the Fourth Proportional to 1,208.11, 1,810.32 and 558.10

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Solution

The fourth proportional to 1,208.11, 1,810.32 and 558.10 is: 836.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.11 : 1,810.32 = 558.10 : x
  2. Step 2: Convert to fraction form
    1,208.11/1,810.32 = 558.10/x
  3. Step 3: Cross multiply
    1,208.11x = 1,810.32 × 558.10
  4. Step 4: Simplify right side
    1,208.11x = 1,010,339.59
  5. Step 5: Solve for x
    x = 1,010,339.59/1,208.11
  6. Step 6: Final answer
    x = 836.30

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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.