Home / 1,288.83-1,933.35-508.87

Finding the Fourth Proportional to 1,288.83, 1,933.35 and 508.87

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Solution

The fourth proportional to 1,288.83, 1,933.35 and 508.87 is: 763.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.83 : 1,933.35 = 508.87 : x
  2. Step 2: Convert to fraction form
    1,288.83/1,933.35 = 508.87/x
  3. Step 3: Cross multiply
    1,288.83x = 1,933.35 × 508.87
  4. Step 4: Simplify right side
    1,288.83x = 983,823.81
  5. Step 5: Solve for x
    x = 983,823.81/1,288.83
  6. Step 6: Final answer
    x = 763.35

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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.