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Finding the Fourth Proportional to 435.16, 600.78 and 386.56

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Solution

The fourth proportional to 435.16, 600.78 and 386.56 is: 533.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.16 : 600.78 = 386.56 : x
  2. Step 2: Convert to fraction form
    435.16/600.78 = 386.56/x
  3. Step 3: Cross multiply
    435.16x = 600.78 × 386.56
  4. Step 4: Simplify right side
    435.16x = 232,237.52
  5. Step 5: Solve for x
    x = 232,237.52/435.16
  6. Step 6: Final answer
    x = 533.68

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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.