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Finding the Fourth Proportional to 587.36, 810.56 and 325.40

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Solution

The fourth proportional to 587.36, 810.56 and 325.40 is: 449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.36 : 810.56 = 325.40 : x
  2. Step 2: Convert to fraction form
    587.36/810.56 = 325.40/x
  3. Step 3: Cross multiply
    587.36x = 810.56 × 325.40
  4. Step 4: Simplify right side
    587.36x = 263,752.98
  5. Step 5: Solve for x
    x = 263,752.98/587.36
  6. Step 6: Final answer
    x = 449.05

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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.