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Finding the Fourth Proportional to 521.39, 719.02 and 334.94

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Solution

The fourth proportional to 521.39, 719.02 and 334.94 is: 461.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.39 : 719.02 = 334.94 : x
  2. Step 2: Convert to fraction form
    521.39/719.02 = 334.94/x
  3. Step 3: Cross multiply
    521.39x = 719.02 × 334.94
  4. Step 4: Simplify right side
    521.39x = 240,825.38
  5. Step 5: Solve for x
    x = 240,825.38/521.39
  6. Step 6: Final answer
    x = 461.89

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Double scale
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1.5x scale

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.