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Finding the Fourth Proportional to 436.40, 656.98 and 376.88

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Solution

The fourth proportional to 436.40, 656.98 and 376.88 is: 567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.40 : 656.98 = 376.88 : x
  2. Step 2: Convert to fraction form
    436.40/656.98 = 376.88/x
  3. Step 3: Cross multiply
    436.40x = 656.98 × 376.88
  4. Step 4: Simplify right side
    436.40x = 247,602.62
  5. Step 5: Solve for x
    x = 247,602.62/436.40
  6. Step 6: Final answer
    x = 567.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.