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Finding the Fourth Proportional to 587.21, 880.97 and 392.94

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Solution

The fourth proportional to 587.21, 880.97 and 392.94 is: 589.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.21 : 880.97 = 392.94 : x
  2. Step 2: Convert to fraction form
    587.21/880.97 = 392.94/x
  3. Step 3: Cross multiply
    587.21x = 880.97 × 392.94
  4. Step 4: Simplify right side
    587.21x = 346,166.39
  5. Step 5: Solve for x
    x = 346,166.39/587.21
  6. Step 6: Final answer
    x = 589.52

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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.