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Finding the Fourth Proportional to 612.27, 917.49 and 474.66

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Solution

The fourth proportional to 612.27, 917.49 and 474.66 is: 711.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.27 : 917.49 = 474.66 : x
  2. Step 2: Convert to fraction form
    612.27/917.49 = 474.66/x
  3. Step 3: Cross multiply
    612.27x = 917.49 × 474.66
  4. Step 4: Simplify right side
    612.27x = 435,495.80
  5. Step 5: Solve for x
    x = 435,495.80/612.27
  6. Step 6: Final answer
    x = 711.28

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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.