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Finding the Fourth Proportional to 357.45, 532.55 and 339.99

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Solution

The fourth proportional to 357.45, 532.55 and 339.99 is: 506.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.45 : 532.55 = 339.99 : x
  2. Step 2: Convert to fraction form
    357.45/532.55 = 339.99/x
  3. Step 3: Cross multiply
    357.45x = 532.55 × 339.99
  4. Step 4: Simplify right side
    357.45x = 181,059.97
  5. Step 5: Solve for x
    x = 181,059.97/357.45
  6. Step 6: Final answer
    x = 506.53

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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.