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Finding the Fourth Proportional to 586.88, 809.90 and 324.90

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Solution

The fourth proportional to 586.88, 809.90 and 324.90 is: 448.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.88 : 809.90 = 324.90 : x
  2. Step 2: Convert to fraction form
    586.88/809.90 = 324.90/x
  3. Step 3: Cross multiply
    586.88x = 809.90 × 324.90
  4. Step 4: Simplify right side
    586.88x = 263,136.51
  5. Step 5: Solve for x
    x = 263,136.51/586.88
  6. Step 6: Final answer
    x = 448.37

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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.