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Finding the Fourth Proportional to 751.63, 1,127.62 and 238.63

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Solution

The fourth proportional to 751.63, 1,127.62 and 238.63 is: 358.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.63 : 1,127.62 = 238.63 : x
  2. Step 2: Convert to fraction form
    751.63/1,127.62 = 238.63/x
  3. Step 3: Cross multiply
    751.63x = 1,127.62 × 238.63
  4. Step 4: Simplify right side
    751.63x = 269,083.96
  5. Step 5: Solve for x
    x = 269,083.96/751.63
  6. Step 6: Final answer
    x = 358.00

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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.