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Finding the Fourth Proportional to 1,043.68, 1,440.32 and 577.92

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Solution

The fourth proportional to 1,043.68, 1,440.32 and 577.92 is: 797.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.68 : 1,440.32 = 577.92 : x
  2. Step 2: Convert to fraction form
    1,043.68/1,440.32 = 577.92/x
  3. Step 3: Cross multiply
    1,043.68x = 1,440.32 × 577.92
  4. Step 4: Simplify right side
    1,043.68x = 832,389.73
  5. Step 5: Solve for x
    x = 832,389.73/1,043.68
  6. Step 6: Final answer
    x = 797.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.