Home / 1,038.22-1,557.33-268.72

Finding the Fourth Proportional to 1,038.22, 1,557.33 and 268.72

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Solution

The fourth proportional to 1,038.22, 1,557.33 and 268.72 is: 403.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.22 : 1,557.33 = 268.72 : x
  2. Step 2: Convert to fraction form
    1,038.22/1,557.33 = 268.72/x
  3. Step 3: Cross multiply
    1,038.22x = 1,557.33 × 268.72
  4. Step 4: Simplify right side
    1,038.22x = 418,489.61
  5. Step 5: Solve for x
    x = 418,489.61/1,038.22
  6. Step 6: Final answer
    x = 403.08

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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.