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Finding the Fourth Proportional to 587.51, 810.76 and 325.53

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Solution

The fourth proportional to 587.51, 810.76 and 325.53 is: 449.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.51 : 810.76 = 325.53 : x
  2. Step 2: Convert to fraction form
    587.51/810.76 = 325.53/x
  3. Step 3: Cross multiply
    587.51x = 810.76 × 325.53
  4. Step 4: Simplify right side
    587.51x = 263,922.65
  5. Step 5: Solve for x
    x = 263,922.65/587.51
  6. Step 6: Final answer
    x = 449.23

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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.