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Finding the Fourth Proportional to 589.16, 813.09 and 340.49

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Solution

The fourth proportional to 589.16, 813.09 and 340.49 is: 469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.16 : 813.09 = 340.49 : x
  2. Step 2: Convert to fraction form
    589.16/813.09 = 340.49/x
  3. Step 3: Cross multiply
    589.16x = 813.09 × 340.49
  4. Step 4: Simplify right side
    589.16x = 276,844.95
  5. Step 5: Solve for x
    x = 276,844.95/589.16
  6. Step 6: Final answer
    x = 469.90

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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.