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Finding the Fourth Proportional to 521.88, 779.58 and 444.48

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Solution

The fourth proportional to 521.88, 779.58 and 444.48 is: 663.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.88 : 779.58 = 444.48 : x
  2. Step 2: Convert to fraction form
    521.88/779.58 = 444.48/x
  3. Step 3: Cross multiply
    521.88x = 779.58 × 444.48
  4. Step 4: Simplify right side
    521.88x = 346,507.72
  5. Step 5: Solve for x
    x = 346,507.72/521.88
  6. Step 6: Final answer
    x = 663.96

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.