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Finding the Fourth Proportional to 1,046.96, 1,572.64 and 682.32

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Solution

The fourth proportional to 1,046.96, 1,572.64 and 682.32 is: 1,024.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.96 : 1,572.64 = 682.32 : x
  2. Step 2: Convert to fraction form
    1,046.96/1,572.64 = 682.32/x
  3. Step 3: Cross multiply
    1,046.96x = 1,572.64 × 682.32
  4. Step 4: Simplify right side
    1,046.96x = 1,073,043.72
  5. Step 5: Solve for x
    x = 1,073,043.72/1,046.96
  6. Step 6: Final answer
    x = 1,024.91

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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.