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Finding the Fourth Proportional to 291.64, 437.35 and 245.38

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Solution

The fourth proportional to 291.64, 437.35 and 245.38 is: 367.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.64 : 437.35 = 245.38 : x
  2. Step 2: Convert to fraction form
    291.64/437.35 = 245.38/x
  3. Step 3: Cross multiply
    291.64x = 437.35 × 245.38
  4. Step 4: Simplify right side
    291.64x = 107,316.94
  5. Step 5: Solve for x
    x = 107,316.94/291.64
  6. Step 6: Final answer
    x = 367.98

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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.