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Finding the Fourth Proportional to 587.54, 810.79 and 325.55

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Solution

The fourth proportional to 587.54, 810.79 and 325.55 is: 449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.54 : 810.79 = 325.55 : x
  2. Step 2: Convert to fraction form
    587.54/810.79 = 325.55/x
  3. Step 3: Cross multiply
    587.54x = 810.79 × 325.55
  4. Step 4: Simplify right side
    587.54x = 263,953.90
  5. Step 5: Solve for x
    x = 263,953.90/587.54
  6. Step 6: Final answer
    x = 449.25

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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.