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Finding the Fourth Proportional to 532.58, 798.46 and 385.97

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Solution

The fourth proportional to 532.58, 798.46 and 385.97 is: 578.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.58 : 798.46 = 385.97 : x
  2. Step 2: Convert to fraction form
    532.58/798.46 = 385.97/x
  3. Step 3: Cross multiply
    532.58x = 798.46 × 385.97
  4. Step 4: Simplify right side
    532.58x = 308,176.65
  5. Step 5: Solve for x
    x = 308,176.65/532.58
  6. Step 6: Final answer
    x = 578.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.