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Finding the Fourth Proportional to 904.73, 1,356.09 and 384.63

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Solution

The fourth proportional to 904.73, 1,356.09 and 384.63 is: 576.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.73 : 1,356.09 = 384.63 : x
  2. Step 2: Convert to fraction form
    904.73/1,356.09 = 384.63/x
  3. Step 3: Cross multiply
    904.73x = 1,356.09 × 384.63
  4. Step 4: Simplify right side
    904.73x = 521,592.90
  5. Step 5: Solve for x
    x = 521,592.90/904.73
  6. Step 6: Final answer
    x = 576.52

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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.