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Finding the Fourth Proportional to 1,335.83, 2,002.19 and 555.39

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Solution

The fourth proportional to 1,335.83, 2,002.19 and 555.39 is: 832.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.83 : 2,002.19 = 555.39 : x
  2. Step 2: Convert to fraction form
    1,335.83/2,002.19 = 555.39/x
  3. Step 3: Cross multiply
    1,335.83x = 2,002.19 × 555.39
  4. Step 4: Simplify right side
    1,335.83x = 1,111,993.53
  5. Step 5: Solve for x
    x = 1,111,993.53/1,335.83
  6. Step 6: Final answer
    x = 832.44

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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.