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Finding the Fourth Proportional to 582.80, 873.92 and 339.40

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Solution

The fourth proportional to 582.80, 873.92 and 339.40 is: 508.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.80 : 873.92 = 339.40 : x
  2. Step 2: Convert to fraction form
    582.80/873.92 = 339.40/x
  3. Step 3: Cross multiply
    582.80x = 873.92 × 339.40
  4. Step 4: Simplify right side
    582.80x = 296,608.45
  5. Step 5: Solve for x
    x = 296,608.45/582.80
  6. Step 6: Final answer
    x = 508.94

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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.