Home / 1,149.98-1,724.40-491.76

Finding the Fourth Proportional to 1,149.98, 1,724.40 and 491.76

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Solution

The fourth proportional to 1,149.98, 1,724.40 and 491.76 is: 737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.98 : 1,724.40 = 491.76 : x
  2. Step 2: Convert to fraction form
    1,149.98/1,724.40 = 491.76/x
  3. Step 3: Cross multiply
    1,149.98x = 1,724.40 × 491.76
  4. Step 4: Simplify right side
    1,149.98x = 847,990.94
  5. Step 5: Solve for x
    x = 847,990.94/1,149.98
  6. Step 6: Final answer
    x = 737.40

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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.