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Finding the Fourth Proportional to 423.18, 583.92 and 246.15

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Solution

The fourth proportional to 423.18, 583.92 and 246.15 is: 339.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.18 : 583.92 = 246.15 : x
  2. Step 2: Convert to fraction form
    423.18/583.92 = 246.15/x
  3. Step 3: Cross multiply
    423.18x = 583.92 × 246.15
  4. Step 4: Simplify right side
    423.18x = 143,731.91
  5. Step 5: Solve for x
    x = 143,731.91/423.18
  6. Step 6: Final answer
    x = 339.65

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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.