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Finding the Fourth Proportional to 589.17, 813.60 and 379.71

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Solution

The fourth proportional to 589.17, 813.60 and 379.71 is: 524.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.17 : 813.60 = 379.71 : x
  2. Step 2: Convert to fraction form
    589.17/813.60 = 379.71/x
  3. Step 3: Cross multiply
    589.17x = 813.60 × 379.71
  4. Step 4: Simplify right side
    589.17x = 308,932.06
  5. Step 5: Solve for x
    x = 308,932.06/589.17
  6. Step 6: Final answer
    x = 524.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.