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Finding the Fourth Proportional to 387.69, 585.05 and 376.14

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Solution

The fourth proportional to 387.69, 585.05 and 376.14 is: 567.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.69 : 585.05 = 376.14 : x
  2. Step 2: Convert to fraction form
    387.69/585.05 = 376.14/x
  3. Step 3: Cross multiply
    387.69x = 585.05 × 376.14
  4. Step 4: Simplify right side
    387.69x = 220,062.08
  5. Step 5: Solve for x
    x = 220,062.08/387.69
  6. Step 6: Final answer
    x = 567.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.