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Finding the Fourth Proportional to 1,335.47, 1,842.95 and 746.00

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Solution

The fourth proportional to 1,335.47, 1,842.95 and 746.00 is: 1,029.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.47 : 1,842.95 = 746.00 : x
  2. Step 2: Convert to fraction form
    1,335.47/1,842.95 = 746.00/x
  3. Step 3: Cross multiply
    1,335.47x = 1,842.95 × 746.00
  4. Step 4: Simplify right side
    1,335.47x = 1,374,841.58
  5. Step 5: Solve for x
    x = 1,374,841.58/1,335.47
  6. Step 6: Final answer
    x = 1,029.48

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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.