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Finding the Fourth Proportional to 1,335.04, 1,841.44 and 869.92

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Solution

The fourth proportional to 1,335.04, 1,841.44 and 869.92 is: 1,199.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.04 : 1,841.44 = 869.92 : x
  2. Step 2: Convert to fraction form
    1,335.04/1,841.44 = 869.92/x
  3. Step 3: Cross multiply
    1,335.04x = 1,841.44 × 869.92
  4. Step 4: Simplify right side
    1,335.04x = 1,601,905.48
  5. Step 5: Solve for x
    x = 1,601,905.48/1,335.04
  6. Step 6: Final answer
    x = 1,199.89

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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.