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Finding the Fourth Proportional to 437.88, 657 and 145.50

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Solution

The fourth proportional to 437.88, 657 and 145.50 is: 218.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.88 : 657 = 145.50 : x
  2. Step 2: Convert to fraction form
    437.88/657 = 145.50/x
  3. Step 3: Cross multiply
    437.88x = 657 × 145.50
  4. Step 4: Simplify right side
    437.88x = 95,593.50
  5. Step 5: Solve for x
    x = 95,593.50/437.88
  6. Step 6: Final answer
    x = 218.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.