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Finding the Fourth Proportional to 360.53, 497.54 and 218.74

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Solution

The fourth proportional to 360.53, 497.54 and 218.74 is: 301.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.53 : 497.54 = 218.74 : x
  2. Step 2: Convert to fraction form
    360.53/497.54 = 218.74/x
  3. Step 3: Cross multiply
    360.53x = 497.54 × 218.74
  4. Step 4: Simplify right side
    360.53x = 108,831.90
  5. Step 5: Solve for x
    x = 108,831.90/360.53
  6. Step 6: Final answer
    x = 301.87

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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.