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Finding the Fourth Proportional to 589.84, 813.72 and 356.92

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Solution

The fourth proportional to 589.84, 813.72 and 356.92 is: 492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.84 : 813.72 = 356.92 : x
  2. Step 2: Convert to fraction form
    589.84/813.72 = 356.92/x
  3. Step 3: Cross multiply
    589.84x = 813.72 × 356.92
  4. Step 4: Simplify right side
    589.84x = 290,432.94
  5. Step 5: Solve for x
    x = 290,432.94/589.84
  6. Step 6: Final answer
    x = 492.39

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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.