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Finding the Fourth Proportional to 587.73, 810.71 and 388.56

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Solution

The fourth proportional to 587.73, 810.71 and 388.56 is: 535.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.73 : 810.71 = 388.56 : x
  2. Step 2: Convert to fraction form
    587.73/810.71 = 388.56/x
  3. Step 3: Cross multiply
    587.73x = 810.71 × 388.56
  4. Step 4: Simplify right side
    587.73x = 315,007.53
  5. Step 5: Solve for x
    x = 315,007.53/587.73
  6. Step 6: Final answer
    x = 535.98

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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.