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Finding the Fourth Proportional to 435.26, 598.64 and 347.78

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Solution

The fourth proportional to 435.26, 598.64 and 347.78 is: 478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.26 : 598.64 = 347.78 : x
  2. Step 2: Convert to fraction form
    435.26/598.64 = 347.78/x
  3. Step 3: Cross multiply
    435.26x = 598.64 × 347.78
  4. Step 4: Simplify right side
    435.26x = 208,190.29
  5. Step 5: Solve for x
    x = 208,190.29/435.26
  6. Step 6: Final answer
    x = 478.32

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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.