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Finding the Fourth Proportional to 751.23, 1,034.19 and 554.40

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Solution

The fourth proportional to 751.23, 1,034.19 and 554.40 is: 763.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.23 : 1,034.19 = 554.40 : x
  2. Step 2: Convert to fraction form
    751.23/1,034.19 = 554.40/x
  3. Step 3: Cross multiply
    751.23x = 1,034.19 × 554.40
  4. Step 4: Simplify right side
    751.23x = 573,354.94
  5. Step 5: Solve for x
    x = 573,354.94/751.23
  6. Step 6: Final answer
    x = 763.22

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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.