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Finding the Fourth Proportional to 369.13, 551.68 and 339.94

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Solution

The fourth proportional to 369.13, 551.68 and 339.94 is: 508.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.13 : 551.68 = 339.94 : x
  2. Step 2: Convert to fraction form
    369.13/551.68 = 339.94/x
  3. Step 3: Cross multiply
    369.13x = 551.68 × 339.94
  4. Step 4: Simplify right side
    369.13x = 187,538.10
  5. Step 5: Solve for x
    x = 187,538.10/369.13
  6. Step 6: Final answer
    x = 508.05

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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.