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Finding the Fourth Proportional to 585.78, 877.99 and 325.72

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Solution

The fourth proportional to 585.78, 877.99 and 325.72 is: 488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.78 : 877.99 = 325.72 : x
  2. Step 2: Convert to fraction form
    585.78/877.99 = 325.72/x
  3. Step 3: Cross multiply
    585.78x = 877.99 × 325.72
  4. Step 4: Simplify right side
    585.78x = 285,979.80
  5. Step 5: Solve for x
    x = 285,979.80/585.78
  6. Step 6: Final answer
    x = 488.20

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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.