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Finding the Fourth Proportional to 554.76, 832.05 and 391.95

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Solution

The fourth proportional to 554.76, 832.05 and 391.95 is: 587.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.76 : 832.05 = 391.95 : x
  2. Step 2: Convert to fraction form
    554.76/832.05 = 391.95/x
  3. Step 3: Cross multiply
    554.76x = 832.05 × 391.95
  4. Step 4: Simplify right side
    554.76x = 326,122.00
  5. Step 5: Solve for x
    x = 326,122.00/554.76
  6. Step 6: Final answer
    x = 587.86

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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.