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Finding the Fourth Proportional to 1,358.33, 1,875.55 and 1,043.09

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Solution

The fourth proportional to 1,358.33, 1,875.55 and 1,043.09 is: 1,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.33 : 1,875.55 = 1,043.09 : x
  2. Step 2: Convert to fraction form
    1,358.33/1,875.55 = 1,043.09/x
  3. Step 3: Cross multiply
    1,358.33x = 1,875.55 × 1,043.09
  4. Step 4: Simplify right side
    1,358.33x = 1,956,358.07
  5. Step 5: Solve for x
    x = 1,956,358.07/1,358.33
  6. Step 6: Final answer
    x = 1,440.27

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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.