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Finding the Fourth Proportional to 1,233.09, 1,702.14 and 761.06

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Solution

The fourth proportional to 1,233.09, 1,702.14 and 761.06 is: 1,050.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.09 : 1,702.14 = 761.06 : x
  2. Step 2: Convert to fraction form
    1,233.09/1,702.14 = 761.06/x
  3. Step 3: Cross multiply
    1,233.09x = 1,702.14 × 761.06
  4. Step 4: Simplify right side
    1,233.09x = 1,295,432.07
  5. Step 5: Solve for x
    x = 1,295,432.07/1,233.09
  6. Step 6: Final answer
    x = 1,050.56

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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.