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Finding the Fourth Proportional to 388.50, 536.50 and 332.91

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Solution

The fourth proportional to 388.50, 536.50 and 332.91 is: 459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.50 : 536.50 = 332.91 : x
  2. Step 2: Convert to fraction form
    388.50/536.50 = 332.91/x
  3. Step 3: Cross multiply
    388.50x = 536.50 × 332.91
  4. Step 4: Simplify right side
    388.50x = 178,605.69
  5. Step 5: Solve for x
    x = 178,605.69/388.50
  6. Step 6: Final answer
    x = 459.74

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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.