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Finding the Fourth Proportional to 662.27, 988.95 and 540.77

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Solution

The fourth proportional to 662.27, 988.95 and 540.77 is: 807.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.27 : 988.95 = 540.77 : x
  2. Step 2: Convert to fraction form
    662.27/988.95 = 540.77/x
  3. Step 3: Cross multiply
    662.27x = 988.95 × 540.77
  4. Step 4: Simplify right side
    662.27x = 534,791.79
  5. Step 5: Solve for x
    x = 534,791.79/662.27
  6. Step 6: Final answer
    x = 807.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.