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Finding the Fourth Proportional to 357.32, 531.77 and 344.36

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Solution

The fourth proportional to 357.32, 531.77 and 344.36 is: 512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.32 : 531.77 = 344.36 : x
  2. Step 2: Convert to fraction form
    357.32/531.77 = 344.36/x
  3. Step 3: Cross multiply
    357.32x = 531.77 × 344.36
  4. Step 4: Simplify right side
    357.32x = 183,115.94
  5. Step 5: Solve for x
    x = 183,115.94/357.32
  6. Step 6: Final answer
    x = 512.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.