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Finding the Fourth Proportional to 468, 701.28 and 313.60

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Solution

The fourth proportional to 468, 701.28 and 313.60 is: 469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    468 : 701.28 = 313.60 : x
  2. Step 2: Convert to fraction form
    468/701.28 = 313.60/x
  3. Step 3: Cross multiply
    468x = 701.28 × 313.60
  4. Step 4: Simplify right side
    468x = 219,921.41
  5. Step 5: Solve for x
    x = 219,921.41/468
  6. Step 6: Final answer
    x = 469.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.