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Finding the Fourth Proportional to 584.06, 805.81 and 387.38

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Solution

The fourth proportional to 584.06, 805.81 and 387.38 is: 534.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.06 : 805.81 = 387.38 : x
  2. Step 2: Convert to fraction form
    584.06/805.81 = 387.38/x
  3. Step 3: Cross multiply
    584.06x = 805.81 × 387.38
  4. Step 4: Simplify right side
    584.06x = 312,154.68
  5. Step 5: Solve for x
    x = 312,154.68/584.06
  6. Step 6: Final answer
    x = 534.46

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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.