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Finding the Fourth Proportional to 387.36, 534.20 and 332.08

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Solution

The fourth proportional to 387.36, 534.20 and 332.08 is: 457.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.36 : 534.20 = 332.08 : x
  2. Step 2: Convert to fraction form
    387.36/534.20 = 332.08/x
  3. Step 3: Cross multiply
    387.36x = 534.20 × 332.08
  4. Step 4: Simplify right side
    387.36x = 177,397.14
  5. Step 5: Solve for x
    x = 177,397.14/387.36
  6. Step 6: Final answer
    x = 457.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.