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Finding the Fourth Proportional to 360.64, 497.60 and 242.56

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Solution

The fourth proportional to 360.64, 497.60 and 242.56 is: 334.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.64 : 497.60 = 242.56 : x
  2. Step 2: Convert to fraction form
    360.64/497.60 = 242.56/x
  3. Step 3: Cross multiply
    360.64x = 497.60 × 242.56
  4. Step 4: Simplify right side
    360.64x = 120,697.86
  5. Step 5: Solve for x
    x = 120,697.86/360.64
  6. Step 6: Final answer
    x = 334.68

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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.