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Finding the Fourth Proportional to 1,342.32, 2,011.08 and 822.06

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Solution

The fourth proportional to 1,342.32, 2,011.08 and 822.06 is: 1,231.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.32 : 2,011.08 = 822.06 : x
  2. Step 2: Convert to fraction form
    1,342.32/2,011.08 = 822.06/x
  3. Step 3: Cross multiply
    1,342.32x = 2,011.08 × 822.06
  4. Step 4: Simplify right side
    1,342.32x = 1,653,228.42
  5. Step 5: Solve for x
    x = 1,653,228.42/1,342.32
  6. Step 6: Final answer
    x = 1,231.62

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1.5x scale

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.