Home / 754.04-1,128.90-511.04

Finding the Fourth Proportional to 754.04, 1,128.90 and 511.04

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Solution

The fourth proportional to 754.04, 1,128.90 and 511.04 is: 765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.04 : 1,128.90 = 511.04 : x
  2. Step 2: Convert to fraction form
    754.04/1,128.90 = 511.04/x
  3. Step 3: Cross multiply
    754.04x = 1,128.90 × 511.04
  4. Step 4: Simplify right side
    754.04x = 576,913.06
  5. Step 5: Solve for x
    x = 576,913.06/754.04
  6. Step 6: Final answer
    x = 765.10

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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.