Home / 1,267.20-1,899.84-497.28

Finding the Fourth Proportional to 1,267.20, 1,899.84 and 497.28

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Solution

The fourth proportional to 1,267.20, 1,899.84 and 497.28 is: 745.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.20 : 1,899.84 = 497.28 : x
  2. Step 2: Convert to fraction form
    1,267.20/1,899.84 = 497.28/x
  3. Step 3: Cross multiply
    1,267.20x = 1,899.84 × 497.28
  4. Step 4: Simplify right side
    1,267.20x = 944,752.44
  5. Step 5: Solve for x
    x = 944,752.44/1,267.20
  6. Step 6: Final answer
    x = 745.54

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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.