Home / 1,038.12-1,557.26-268.62

Finding the Fourth Proportional to 1,038.12, 1,557.26 and 268.62

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Solution

The fourth proportional to 1,038.12, 1,557.26 and 268.62 is: 402.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.12 : 1,557.26 = 268.62 : x
  2. Step 2: Convert to fraction form
    1,038.12/1,557.26 = 268.62/x
  3. Step 3: Cross multiply
    1,038.12x = 1,557.26 × 268.62
  4. Step 4: Simplify right side
    1,038.12x = 418,311.18
  5. Step 5: Solve for x
    x = 418,311.18/1,038.12
  6. Step 6: Final answer
    x = 402.95

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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.