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Finding the Fourth Proportional to 589.36, 813.36 and 340.69

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Solution

The fourth proportional to 589.36, 813.36 and 340.69 is: 470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.36 : 813.36 = 340.69 : x
  2. Step 2: Convert to fraction form
    589.36/813.36 = 340.69/x
  3. Step 3: Cross multiply
    589.36x = 813.36 × 340.69
  4. Step 4: Simplify right side
    589.36x = 277,103.62
  5. Step 5: Solve for x
    x = 277,103.62/589.36
  6. Step 6: Final answer
    x = 470.18

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Double scale
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1.5x scale

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.