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Finding the Fourth Proportional to 583.49, 875.58 and 218.31

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Solution

The fourth proportional to 583.49, 875.58 and 218.31 is: 327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.49 : 875.58 = 218.31 : x
  2. Step 2: Convert to fraction form
    583.49/875.58 = 218.31/x
  3. Step 3: Cross multiply
    583.49x = 875.58 × 218.31
  4. Step 4: Simplify right side
    583.49x = 191,147.87
  5. Step 5: Solve for x
    x = 191,147.87/583.49
  6. Step 6: Final answer
    x = 327.59

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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.