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Finding the Fourth Proportional to 656.14, 905.50 and 376.40

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Solution

The fourth proportional to 656.14, 905.50 and 376.40 is: 519.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.14 : 905.50 = 376.40 : x
  2. Step 2: Convert to fraction form
    656.14/905.50 = 376.40/x
  3. Step 3: Cross multiply
    656.14x = 905.50 × 376.40
  4. Step 4: Simplify right side
    656.14x = 340,830.20
  5. Step 5: Solve for x
    x = 340,830.20/656.14
  6. Step 6: Final answer
    x = 519.45

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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.