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Finding the Fourth Proportional to 589.32, 813.23 and 340.72

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Solution

The fourth proportional to 589.32, 813.23 and 340.72 is: 470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.32 : 813.23 = 340.72 : x
  2. Step 2: Convert to fraction form
    589.32/813.23 = 340.72/x
  3. Step 3: Cross multiply
    589.32x = 813.23 × 340.72
  4. Step 4: Simplify right side
    589.32x = 277,081.27
  5. Step 5: Solve for x
    x = 277,081.27/589.32
  6. Step 6: Final answer
    x = 470.17

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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.