Home / 1,289.41-1,933.35-508.49

Finding the Fourth Proportional to 1,289.41, 1,933.35 and 508.49

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Solution

The fourth proportional to 1,289.41, 1,933.35 and 508.49 is: 762.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.41 : 1,933.35 = 508.49 : x
  2. Step 2: Convert to fraction form
    1,289.41/1,933.35 = 508.49/x
  3. Step 3: Cross multiply
    1,289.41x = 1,933.35 × 508.49
  4. Step 4: Simplify right side
    1,289.41x = 983,089.14
  5. Step 5: Solve for x
    x = 983,089.14/1,289.41
  6. Step 6: Final answer
    x = 762.43

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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.