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Finding the Fourth Proportional to 677.39, 1,018.37 and 541.92

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Solution

The fourth proportional to 677.39, 1,018.37 and 541.92 is: 814.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.39 : 1,018.37 = 541.92 : x
  2. Step 2: Convert to fraction form
    677.39/1,018.37 = 541.92/x
  3. Step 3: Cross multiply
    677.39x = 1,018.37 × 541.92
  4. Step 4: Simplify right side
    677.39x = 551,875.07
  5. Step 5: Solve for x
    x = 551,875.07/677.39
  6. Step 6: Final answer
    x = 814.71

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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.