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Finding the Fourth Proportional to 409.16, 564.54 and 277.94

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Solution

The fourth proportional to 409.16, 564.54 and 277.94 is: 383.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.16 : 564.54 = 277.94 : x
  2. Step 2: Convert to fraction form
    409.16/564.54 = 277.94/x
  3. Step 3: Cross multiply
    409.16x = 564.54 × 277.94
  4. Step 4: Simplify right side
    409.16x = 156,908.25
  5. Step 5: Solve for x
    x = 156,908.25/409.16
  6. Step 6: Final answer
    x = 383.49

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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.