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Finding the Fourth Proportional to 573.34, 790.75 and 386.76

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Solution

The fourth proportional to 573.34, 790.75 and 386.76 is: 533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.34 : 790.75 = 386.76 : x
  2. Step 2: Convert to fraction form
    573.34/790.75 = 386.76/x
  3. Step 3: Cross multiply
    573.34x = 790.75 × 386.76
  4. Step 4: Simplify right side
    573.34x = 305,830.47
  5. Step 5: Solve for x
    x = 305,830.47/573.34
  6. Step 6: Final answer
    x = 533.42

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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.