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Finding the Fourth Proportional to 245.18, 368.48 and 204.31

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Solution

The fourth proportional to 245.18, 368.48 and 204.31 is: 307.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.18 : 368.48 = 204.31 : x
  2. Step 2: Convert to fraction form
    245.18/368.48 = 204.31/x
  3. Step 3: Cross multiply
    245.18x = 368.48 × 204.31
  4. Step 4: Simplify right side
    245.18x = 75,282.21
  5. Step 5: Solve for x
    x = 75,282.21/245.18
  6. Step 6: Final answer
    x = 307.05

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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.