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Finding the Fourth Proportional to 446.94, 617.70 and 392.91

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Solution

The fourth proportional to 446.94, 617.70 and 392.91 is: 543.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.94 : 617.70 = 392.91 : x
  2. Step 2: Convert to fraction form
    446.94/617.70 = 392.91/x
  3. Step 3: Cross multiply
    446.94x = 617.70 × 392.91
  4. Step 4: Simplify right side
    446.94x = 242,700.51
  5. Step 5: Solve for x
    x = 242,700.51/446.94
  6. Step 6: Final answer
    x = 543.03

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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.