Home / 1,126.44-1,554.50-629.10

Finding the Fourth Proportional to 1,126.44, 1,554.50 and 629.10

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Solution

The fourth proportional to 1,126.44, 1,554.50 and 629.10 is: 868.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.44 : 1,554.50 = 629.10 : x
  2. Step 2: Convert to fraction form
    1,126.44/1,554.50 = 629.10/x
  3. Step 3: Cross multiply
    1,126.44x = 1,554.50 × 629.10
  4. Step 4: Simplify right side
    1,126.44x = 977,935.95
  5. Step 5: Solve for x
    x = 977,935.95/1,126.44
  6. Step 6: Final answer
    x = 868.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.