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Finding the Fourth Proportional to 436.25, 601.18 and 347.45

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Solution

The fourth proportional to 436.25, 601.18 and 347.45 is: 478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.25 : 601.18 = 347.45 : x
  2. Step 2: Convert to fraction form
    436.25/601.18 = 347.45/x
  3. Step 3: Cross multiply
    436.25x = 601.18 × 347.45
  4. Step 4: Simplify right side
    436.25x = 208,876.12
  5. Step 5: Solve for x
    x = 208,876.12/436.25
  6. Step 6: Final answer
    x = 478.80

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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.