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Finding the Fourth Proportional to 589.63, 813.68 and 356.71

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Solution

The fourth proportional to 589.63, 813.68 and 356.71 is: 492.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.63 : 813.68 = 356.71 : x
  2. Step 2: Convert to fraction form
    589.63/813.68 = 356.71/x
  3. Step 3: Cross multiply
    589.63x = 813.68 × 356.71
  4. Step 4: Simplify right side
    589.63x = 290,247.79
  5. Step 5: Solve for x
    x = 290,247.79/589.63
  6. Step 6: Final answer
    x = 492.25

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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.