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Finding the Fourth Proportional to 451.96, 677.88 and 127.35

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Solution

The fourth proportional to 451.96, 677.88 and 127.35 is: 191.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.96 : 677.88 = 127.35 : x
  2. Step 2: Convert to fraction form
    451.96/677.88 = 127.35/x
  3. Step 3: Cross multiply
    451.96x = 677.88 × 127.35
  4. Step 4: Simplify right side
    451.96x = 86,328.02
  5. Step 5: Solve for x
    x = 86,328.02/451.96
  6. Step 6: Final answer
    x = 191.01

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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.