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Finding the Fourth Proportional to 532.12, 798.20 and 285.48

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Solution

The fourth proportional to 532.12, 798.20 and 285.48 is: 428.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.12 : 798.20 = 285.48 : x
  2. Step 2: Convert to fraction form
    532.12/798.20 = 285.48/x
  3. Step 3: Cross multiply
    532.12x = 798.20 × 285.48
  4. Step 4: Simplify right side
    532.12x = 227,870.14
  5. Step 5: Solve for x
    x = 227,870.14/532.12
  6. Step 6: Final answer
    x = 428.23

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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.