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Finding the Fourth Proportional to 360.85, 497.80 and 229.90

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Solution

The fourth proportional to 360.85, 497.80 and 229.90 is: 317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.85 : 497.80 = 229.90 : x
  2. Step 2: Convert to fraction form
    360.85/497.80 = 229.90/x
  3. Step 3: Cross multiply
    360.85x = 497.80 × 229.90
  4. Step 4: Simplify right side
    360.85x = 114,444.22
  5. Step 5: Solve for x
    x = 114,444.22/360.85
  6. Step 6: Final answer
    x = 317.15

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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.