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Finding the Fourth Proportional to 474.13, 711.11 and 127.49

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Solution

The fourth proportional to 474.13, 711.11 and 127.49 is: 191.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.13 : 711.11 = 127.49 : x
  2. Step 2: Convert to fraction form
    474.13/711.11 = 127.49/x
  3. Step 3: Cross multiply
    474.13x = 711.11 × 127.49
  4. Step 4: Simplify right side
    474.13x = 90,655.22
  5. Step 5: Solve for x
    x = 90,655.22/474.13
  6. Step 6: Final answer
    x = 191.21

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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.