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Finding the Fourth Proportional to 1,201.10, 1,657.99 and 1,032.38

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Solution

The fourth proportional to 1,201.10, 1,657.99 and 1,032.38 is: 1,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.10 : 1,657.99 = 1,032.38 : x
  2. Step 2: Convert to fraction form
    1,201.10/1,657.99 = 1,032.38/x
  3. Step 3: Cross multiply
    1,201.10x = 1,657.99 × 1,032.38
  4. Step 4: Simplify right side
    1,201.10x = 1,711,675.72
  5. Step 5: Solve for x
    x = 1,711,675.72/1,201.10
  6. Step 6: Final answer
    x = 1,425.10

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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.