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Finding the Fourth Proportional to 369.04, 555.76 and 321.52

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Solution

The fourth proportional to 369.04, 555.76 and 321.52 is: 484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.04 : 555.76 = 321.52 : x
  2. Step 2: Convert to fraction form
    369.04/555.76 = 321.52/x
  3. Step 3: Cross multiply
    369.04x = 555.76 × 321.52
  4. Step 4: Simplify right side
    369.04x = 178,687.96
  5. Step 5: Solve for x
    x = 178,687.96/369.04
  6. Step 6: Final answer
    x = 484.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.