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Finding the Fourth Proportional to 1,340.62, 2,009.31 and 569.50

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Solution

The fourth proportional to 1,340.62, 2,009.31 and 569.50 is: 853.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.62 : 2,009.31 = 569.50 : x
  2. Step 2: Convert to fraction form
    1,340.62/2,009.31 = 569.50/x
  3. Step 3: Cross multiply
    1,340.62x = 2,009.31 × 569.50
  4. Step 4: Simplify right side
    1,340.62x = 1,144,302.05
  5. Step 5: Solve for x
    x = 1,144,302.05/1,340.62
  6. Step 6: Final answer
    x = 853.56

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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.