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Finding the Fourth Proportional to 437.74, 655.59 and 307.87

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Solution

The fourth proportional to 437.74, 655.59 and 307.87 is: 461.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.74 : 655.59 = 307.87 : x
  2. Step 2: Convert to fraction form
    437.74/655.59 = 307.87/x
  3. Step 3: Cross multiply
    437.74x = 655.59 × 307.87
  4. Step 4: Simplify right side
    437.74x = 201,836.49
  5. Step 5: Solve for x
    x = 201,836.49/437.74
  6. Step 6: Final answer
    x = 461.09

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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.