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Finding the Fourth Proportional to 1,657.60, 2,482.80 and 1,333.60

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Solution

The fourth proportional to 1,657.60, 2,482.80 and 1,333.60 is: 1,997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.60 : 2,482.80 = 1,333.60 : x
  2. Step 2: Convert to fraction form
    1,657.60/2,482.80 = 1,333.60/x
  3. Step 3: Cross multiply
    1,657.60x = 2,482.80 × 1,333.60
  4. Step 4: Simplify right side
    1,657.60x = 3,311,062.08
  5. Step 5: Solve for x
    x = 3,311,062.08/1,657.60
  6. Step 6: Final answer
    x = 1,997.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.