Home / 1,126.26-1,689.37-356.76

Finding the Fourth Proportional to 1,126.26, 1,689.37 and 356.76

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Solution

The fourth proportional to 1,126.26, 1,689.37 and 356.76 is: 535.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.26 : 1,689.37 = 356.76 : x
  2. Step 2: Convert to fraction form
    1,126.26/1,689.37 = 356.76/x
  3. Step 3: Cross multiply
    1,126.26x = 1,689.37 × 356.76
  4. Step 4: Simplify right side
    1,126.26x = 602,699.64
  5. Step 5: Solve for x
    x = 602,699.64/1,126.26
  6. Step 6: Final answer
    x = 535.13

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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.