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Finding the Fourth Proportional to 368.56, 509.14 and 294.78

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Solution

The fourth proportional to 368.56, 509.14 and 294.78 is: 407.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.56 : 509.14 = 294.78 : x
  2. Step 2: Convert to fraction form
    368.56/509.14 = 294.78/x
  3. Step 3: Cross multiply
    368.56x = 509.14 × 294.78
  4. Step 4: Simplify right side
    368.56x = 150,084.29
  5. Step 5: Solve for x
    x = 150,084.29/368.56
  6. Step 6: Final answer
    x = 407.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.