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Finding the Fourth Proportional to 550.84, 760.98 and 484.96

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Solution

The fourth proportional to 550.84, 760.98 and 484.96 is: 669.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.84 : 760.98 = 484.96 : x
  2. Step 2: Convert to fraction form
    550.84/760.98 = 484.96/x
  3. Step 3: Cross multiply
    550.84x = 760.98 × 484.96
  4. Step 4: Simplify right side
    550.84x = 369,044.86
  5. Step 5: Solve for x
    x = 369,044.86/550.84
  6. Step 6: Final answer
    x = 669.97

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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.