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Finding the Fourth Proportional to 474.43, 654.61 and 277.90

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Solution

The fourth proportional to 474.43, 654.61 and 277.90 is: 383.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.43 : 654.61 = 277.90 : x
  2. Step 2: Convert to fraction form
    474.43/654.61 = 277.90/x
  3. Step 3: Cross multiply
    474.43x = 654.61 × 277.90
  4. Step 4: Simplify right side
    474.43x = 181,916.12
  5. Step 5: Solve for x
    x = 181,916.12/474.43
  6. Step 6: Final answer
    x = 383.45

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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.