Home / 1,113.18-1,669.74-382.75

Finding the Fourth Proportional to 1,113.18, 1,669.74 and 382.75

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Solution

The fourth proportional to 1,113.18, 1,669.74 and 382.75 is: 574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.18 : 1,669.74 = 382.75 : x
  2. Step 2: Convert to fraction form
    1,113.18/1,669.74 = 382.75/x
  3. Step 3: Cross multiply
    1,113.18x = 1,669.74 × 382.75
  4. Step 4: Simplify right side
    1,113.18x = 639,092.99
  5. Step 5: Solve for x
    x = 639,092.99/1,113.18
  6. Step 6: Final answer
    x = 574.11

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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.