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Finding the Fourth Proportional to 521.28, 714.72 and 483.36

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Solution

The fourth proportional to 521.28, 714.72 and 483.36 is: 662.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.28 : 714.72 = 483.36 : x
  2. Step 2: Convert to fraction form
    521.28/714.72 = 483.36/x
  3. Step 3: Cross multiply
    521.28x = 714.72 × 483.36
  4. Step 4: Simplify right side
    521.28x = 345,467.06
  5. Step 5: Solve for x
    x = 345,467.06/521.28
  6. Step 6: Final answer
    x = 662.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.