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Finding the Fourth Proportional to 1,345.43, 2,014.31 and 882.20

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Solution

The fourth proportional to 1,345.43, 2,014.31 and 882.20 is: 1,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.43 : 2,014.31 = 882.20 : x
  2. Step 2: Convert to fraction form
    1,345.43/2,014.31 = 882.20/x
  3. Step 3: Cross multiply
    1,345.43x = 2,014.31 × 882.20
  4. Step 4: Simplify right side
    1,345.43x = 1,777,009.80
  5. Step 5: Solve for x
    x = 1,777,009.80/1,345.43
  6. Step 6: Final answer
    x = 1,320.78

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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.