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Finding the Fourth Proportional to 583.13, 804.53 and 386.75

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Solution

The fourth proportional to 583.13, 804.53 and 386.75 is: 533.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.13 : 804.53 = 386.75 : x
  2. Step 2: Convert to fraction form
    583.13/804.53 = 386.75/x
  3. Step 3: Cross multiply
    583.13x = 804.53 × 386.75
  4. Step 4: Simplify right side
    583.13x = 311,148.92
  5. Step 5: Solve for x
    x = 311,148.92/583.13
  6. Step 6: Final answer
    x = 533.59

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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.