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Finding the Fourth Proportional to 1,339.22, 1,848.14 and 749.77

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Solution

The fourth proportional to 1,339.22, 1,848.14 and 749.77 is: 1,034.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.22 : 1,848.14 = 749.77 : x
  2. Step 2: Convert to fraction form
    1,339.22/1,848.14 = 749.77/x
  3. Step 3: Cross multiply
    1,339.22x = 1,848.14 × 749.77
  4. Step 4: Simplify right side
    1,339.22x = 1,385,679.93
  5. Step 5: Solve for x
    x = 1,385,679.93/1,339.22
  6. Step 6: Final answer
    x = 1,034.69

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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.