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Finding the Fourth Proportional to 551.61, 760.91 and 344.25

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Solution

The fourth proportional to 551.61, 760.91 and 344.25 is: 474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.61 : 760.91 = 344.25 : x
  2. Step 2: Convert to fraction form
    551.61/760.91 = 344.25/x
  3. Step 3: Cross multiply
    551.61x = 760.91 × 344.25
  4. Step 4: Simplify right side
    551.61x = 261,941.55
  5. Step 5: Solve for x
    x = 261,941.55/551.61
  6. Step 6: Final answer
    x = 474.87

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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.