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Finding the Fourth Proportional to 927.58, 1,390.98 and 334.42

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Solution

The fourth proportional to 927.58, 1,390.98 and 334.42 is: 501.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.58 : 1,390.98 = 334.42 : x
  2. Step 2: Convert to fraction form
    927.58/1,390.98 = 334.42/x
  3. Step 3: Cross multiply
    927.58x = 1,390.98 × 334.42
  4. Step 4: Simplify right side
    927.58x = 465,171.53
  5. Step 5: Solve for x
    x = 465,171.53/927.58
  6. Step 6: Final answer
    x = 501.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.