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Finding the Fourth Proportional to 582.76, 873.64 and 257.95

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Solution

The fourth proportional to 582.76, 873.64 and 257.95 is: 386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.76 : 873.64 = 257.95 : x
  2. Step 2: Convert to fraction form
    582.76/873.64 = 257.95/x
  3. Step 3: Cross multiply
    582.76x = 873.64 × 257.95
  4. Step 4: Simplify right side
    582.76x = 225,355.44
  5. Step 5: Solve for x
    x = 225,355.44/582.76
  6. Step 6: Final answer
    x = 386.70

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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.