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Finding the Fourth Proportional to 292.10, 403.19 and 230.20

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Solution

The fourth proportional to 292.10, 403.19 and 230.20 is: 317.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.10 : 403.19 = 230.20 : x
  2. Step 2: Convert to fraction form
    292.10/403.19 = 230.20/x
  3. Step 3: Cross multiply
    292.10x = 403.19 × 230.20
  4. Step 4: Simplify right side
    292.10x = 92,814.34
  5. Step 5: Solve for x
    x = 92,814.34/292.10
  6. Step 6: Final answer
    x = 317.75

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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.