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Finding the Fourth Proportional to 532.56, 800.28 and 316.20

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Solution

The fourth proportional to 532.56, 800.28 and 316.20 is: 475.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.56 : 800.28 = 316.20 : x
  2. Step 2: Convert to fraction form
    532.56/800.28 = 316.20/x
  3. Step 3: Cross multiply
    532.56x = 800.28 × 316.20
  4. Step 4: Simplify right side
    532.56x = 253,048.54
  5. Step 5: Solve for x
    x = 253,048.54/532.56
  6. Step 6: Final answer
    x = 475.15

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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.