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Finding the Fourth Proportional to 1,340.76, 2,011.12 and 475.08

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Solution

The fourth proportional to 1,340.76, 2,011.12 and 475.08 is: 712.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.76 : 2,011.12 = 475.08 : x
  2. Step 2: Convert to fraction form
    1,340.76/2,011.12 = 475.08/x
  3. Step 3: Cross multiply
    1,340.76x = 2,011.12 × 475.08
  4. Step 4: Simplify right side
    1,340.76x = 955,442.89
  5. Step 5: Solve for x
    x = 955,442.89/1,340.76
  6. Step 6: Final answer
    x = 712.61

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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.