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Finding the Fourth Proportional to 1,339.36, 2,009.48 and 473.48

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Solution

The fourth proportional to 1,339.36, 2,009.48 and 473.48 is: 710.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.36 : 2,009.48 = 473.48 : x
  2. Step 2: Convert to fraction form
    1,339.36/2,009.48 = 473.48/x
  3. Step 3: Cross multiply
    1,339.36x = 2,009.48 × 473.48
  4. Step 4: Simplify right side
    1,339.36x = 951,448.59
  5. Step 5: Solve for x
    x = 951,448.59/1,339.36
  6. Step 6: Final answer
    x = 710.38

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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.