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Finding the Fourth Proportional to 751.18, 1,126.59 and 238.18

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Solution

The fourth proportional to 751.18, 1,126.59 and 238.18 is: 357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.18 : 1,126.59 = 238.18 : x
  2. Step 2: Convert to fraction form
    751.18/1,126.59 = 238.18/x
  3. Step 3: Cross multiply
    751.18x = 1,126.59 × 238.18
  4. Step 4: Simplify right side
    751.18x = 268,331.21
  5. Step 5: Solve for x
    x = 268,331.21/751.18
  6. Step 6: Final answer
    x = 357.21

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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.