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Finding the Fourth Proportional to 356.04, 534.46 and 321.20

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Solution

The fourth proportional to 356.04, 534.46 and 321.20 is: 482.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.04 : 534.46 = 321.20 : x
  2. Step 2: Convert to fraction form
    356.04/534.46 = 321.20/x
  3. Step 3: Cross multiply
    356.04x = 534.46 × 321.20
  4. Step 4: Simplify right side
    356.04x = 171,668.55
  5. Step 5: Solve for x
    x = 171,668.55/356.04
  6. Step 6: Final answer
    x = 482.16

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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.