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Finding the Fourth Proportional to 435.40, 600.67 and 258.34

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Solution

The fourth proportional to 435.40, 600.67 and 258.34 is: 356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.40 : 600.67 = 258.34 : x
  2. Step 2: Convert to fraction form
    435.40/600.67 = 258.34/x
  3. Step 3: Cross multiply
    435.40x = 600.67 × 258.34
  4. Step 4: Simplify right side
    435.40x = 155,177.09
  5. Step 5: Solve for x
    x = 155,177.09/435.40
  6. Step 6: Final answer
    x = 356.40

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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.