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Finding the Fourth Proportional to 1,335.08, 1,842.72 and 745.84

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Solution

The fourth proportional to 1,335.08, 1,842.72 and 745.84 is: 1,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.08 : 1,842.72 = 745.84 : x
  2. Step 2: Convert to fraction form
    1,335.08/1,842.72 = 745.84/x
  3. Step 3: Cross multiply
    1,335.08x = 1,842.72 × 745.84
  4. Step 4: Simplify right side
    1,335.08x = 1,374,374.28
  5. Step 5: Solve for x
    x = 1,374,374.28/1,335.08
  6. Step 6: Final answer
    x = 1,029.43

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1.5x scale

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.