Home / 1,156.09-1,734.15-290.38

Finding the Fourth Proportional to 1,156.09, 1,734.15 and 290.38

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Solution

The fourth proportional to 1,156.09, 1,734.15 and 290.38 is: 435.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.09 : 1,734.15 = 290.38 : x
  2. Step 2: Convert to fraction form
    1,156.09/1,734.15 = 290.38/x
  3. Step 3: Cross multiply
    1,156.09x = 1,734.15 × 290.38
  4. Step 4: Simplify right side
    1,156.09x = 503,553.81
  5. Step 5: Solve for x
    x = 503,553.81/1,156.09
  6. Step 6: Final answer
    x = 435.57

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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.