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Finding the Fourth Proportional to 370.49, 511.18 and 230.63

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Solution

The fourth proportional to 370.49, 511.18 and 230.63 is: 318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.49 : 511.18 = 230.63 : x
  2. Step 2: Convert to fraction form
    370.49/511.18 = 230.63/x
  3. Step 3: Cross multiply
    370.49x = 511.18 × 230.63
  4. Step 4: Simplify right side
    370.49x = 117,890.31
  5. Step 5: Solve for x
    x = 117,890.31/370.49
  6. Step 6: Final answer
    x = 318.21

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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.