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Finding the Fourth Proportional to 530.96, 799.20 and 480.65

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Solution

The fourth proportional to 530.96, 799.20 and 480.65 is: 723.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.96 : 799.20 = 480.65 : x
  2. Step 2: Convert to fraction form
    530.96/799.20 = 480.65/x
  3. Step 3: Cross multiply
    530.96x = 799.20 × 480.65
  4. Step 4: Simplify right side
    530.96x = 384,131.48
  5. Step 5: Solve for x
    x = 384,131.48/530.96
  6. Step 6: Final answer
    x = 723.47

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.