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Finding the Fourth Proportional to 474.45, 654.63 and 277.92

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Solution

The fourth proportional to 474.45, 654.63 and 277.92 is: 383.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.45 : 654.63 = 277.92 : x
  2. Step 2: Convert to fraction form
    474.45/654.63 = 277.92/x
  3. Step 3: Cross multiply
    474.45x = 654.63 × 277.92
  4. Step 4: Simplify right side
    474.45x = 181,934.77
  5. Step 5: Solve for x
    x = 181,934.77/474.45
  6. Step 6: Final answer
    x = 383.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.