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Finding the Fourth Proportional to 583.99, 875.79 and 213.71

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Solution

The fourth proportional to 583.99, 875.79 and 213.71 is: 320.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.99 : 875.79 = 213.71 : x
  2. Step 2: Convert to fraction form
    583.99/875.79 = 213.71/x
  3. Step 3: Cross multiply
    583.99x = 875.79 × 213.71
  4. Step 4: Simplify right side
    583.99x = 187,161.54
  5. Step 5: Solve for x
    x = 187,161.54/583.99
  6. Step 6: Final answer
    x = 320.49

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.