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Finding the Fourth Proportional to 369.49, 551.59 and 356.68

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Solution

The fourth proportional to 369.49, 551.59 and 356.68 is: 532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.49 : 551.59 = 356.68 : x
  2. Step 2: Convert to fraction form
    369.49/551.59 = 356.68/x
  3. Step 3: Cross multiply
    369.49x = 551.59 × 356.68
  4. Step 4: Simplify right side
    369.49x = 196,741.12
  5. Step 5: Solve for x
    x = 196,741.12/369.49
  6. Step 6: Final answer
    x = 532.47

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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.