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Finding the Fourth Proportional to 602.91, 830.25 and 589.28

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Solution

The fourth proportional to 602.91, 830.25 and 589.28 is: 811.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.91 : 830.25 = 589.28 : x
  2. Step 2: Convert to fraction form
    602.91/830.25 = 589.28/x
  3. Step 3: Cross multiply
    602.91x = 830.25 × 589.28
  4. Step 4: Simplify right side
    602.91x = 489,245.57
  5. Step 5: Solve for x
    x = 489,245.57/602.91
  6. Step 6: Final answer
    x = 811.47

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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.