Home / 1,276.40-1,914.50-545.99

Finding the Fourth Proportional to 1,276.40, 1,914.50 and 545.99

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Solution

The fourth proportional to 1,276.40, 1,914.50 and 545.99 is: 818.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.40 : 1,914.50 = 545.99 : x
  2. Step 2: Convert to fraction form
    1,276.40/1,914.50 = 545.99/x
  3. Step 3: Cross multiply
    1,276.40x = 1,914.50 × 545.99
  4. Step 4: Simplify right side
    1,276.40x = 1,045,289.65
  5. Step 5: Solve for x
    x = 1,045,289.65/1,276.40
  6. Step 6: Final answer
    x = 818.93

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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.