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Finding the Fourth Proportional to 546, 817.92 and 409.92

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Solution

The fourth proportional to 546, 817.92 and 409.92 is: 614.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    546 : 817.92 = 409.92 : x
  2. Step 2: Convert to fraction form
    546/817.92 = 409.92/x
  3. Step 3: Cross multiply
    546x = 817.92 × 409.92
  4. Step 4: Simplify right side
    546x = 335,281.77
  5. Step 5: Solve for x
    x = 335,281.77/546
  6. Step 6: Final answer
    x = 614.07

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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.