Home / 1,127.07-1,688.99-550.35

Finding the Fourth Proportional to 1,127.07, 1,688.99 and 550.35

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Solution

The fourth proportional to 1,127.07, 1,688.99 and 550.35 is: 824.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.07 : 1,688.99 = 550.35 : x
  2. Step 2: Convert to fraction form
    1,127.07/1,688.99 = 550.35/x
  3. Step 3: Cross multiply
    1,127.07x = 1,688.99 × 550.35
  4. Step 4: Simplify right side
    1,127.07x = 929,532.89
  5. Step 5: Solve for x
    x = 929,532.89/1,127.07
  6. Step 6: Final answer
    x = 824.73

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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.