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Finding the Fourth Proportional to 460.79, 635.79 and 274.35

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Solution

The fourth proportional to 460.79, 635.79 and 274.35 is: 378.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.79 : 635.79 = 274.35 : x
  2. Step 2: Convert to fraction form
    460.79/635.79 = 274.35/x
  3. Step 3: Cross multiply
    460.79x = 635.79 × 274.35
  4. Step 4: Simplify right side
    460.79x = 174,430.86
  5. Step 5: Solve for x
    x = 174,430.86/460.79
  6. Step 6: Final answer
    x = 378.54

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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.