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Finding the Fourth Proportional to 1,700.80, 2,342.80 and 1,202.56

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Solution

The fourth proportional to 1,700.80, 2,342.80 and 1,202.56 is: 1,656.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,700.80 : 2,342.80 = 1,202.56 : x
  2. Step 2: Convert to fraction form
    1,700.80/2,342.80 = 1,202.56/x
  3. Step 3: Cross multiply
    1,700.80x = 2,342.80 × 1,202.56
  4. Step 4: Simplify right side
    1,700.80x = 2,817,357.57
  5. Step 5: Solve for x
    x = 2,817,357.57/1,700.80
  6. Step 6: Final answer
    x = 1,656.49

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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.