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Finding the Fourth Proportional to 585.83, 877.05 and 388.39

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Solution

The fourth proportional to 585.83, 877.05 and 388.39 is: 581.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.83 : 877.05 = 388.39 : x
  2. Step 2: Convert to fraction form
    585.83/877.05 = 388.39/x
  3. Step 3: Cross multiply
    585.83x = 877.05 × 388.39
  4. Step 4: Simplify right side
    585.83x = 340,635.26
  5. Step 5: Solve for x
    x = 340,635.26/585.83
  6. Step 6: Final answer
    x = 581.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.