Home / 1,038.45-1,557.67-268.95

Finding the Fourth Proportional to 1,038.45, 1,557.67 and 268.95

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Solution

The fourth proportional to 1,038.45, 1,557.67 and 268.95 is: 403.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.45 : 1,557.67 = 268.95 : x
  2. Step 2: Convert to fraction form
    1,038.45/1,557.67 = 268.95/x
  3. Step 3: Cross multiply
    1,038.45x = 1,557.67 × 268.95
  4. Step 4: Simplify right side
    1,038.45x = 418,927.50
  5. Step 5: Solve for x
    x = 418,927.50/1,038.45
  6. Step 6: Final answer
    x = 403.42

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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.