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Finding the Fourth Proportional to 1,335.60, 1,842.62 and 1,333.55

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Solution

The fourth proportional to 1,335.60, 1,842.62 and 1,333.55 is: 1,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.60 : 1,842.62 = 1,333.55 : x
  2. Step 2: Convert to fraction form
    1,335.60/1,842.62 = 1,333.55/x
  3. Step 3: Cross multiply
    1,335.60x = 1,842.62 × 1,333.55
  4. Step 4: Simplify right side
    1,335.60x = 2,457,210.02
  5. Step 5: Solve for x
    x = 2,457,210.02/1,335.60
  6. Step 6: Final answer
    x = 1,839.78

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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.