Home / 1,126.55-1,554.59-629.10

Finding the Fourth Proportional to 1,126.55, 1,554.59 and 629.10

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Solution

The fourth proportional to 1,126.55, 1,554.59 and 629.10 is: 868.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.55 : 1,554.59 = 629.10 : x
  2. Step 2: Convert to fraction form
    1,126.55/1,554.59 = 629.10/x
  3. Step 3: Cross multiply
    1,126.55x = 1,554.59 × 629.10
  4. Step 4: Simplify right side
    1,126.55x = 977,984.80
  5. Step 5: Solve for x
    x = 977,984.80/1,126.55
  6. Step 6: Final answer
    x = 868.12

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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.