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Finding the Fourth Proportional to 291.04, 433.16 and 276.96

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Solution

The fourth proportional to 291.04, 433.16 and 276.96 is: 412.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.04 : 433.16 = 276.96 : x
  2. Step 2: Convert to fraction form
    291.04/433.16 = 276.96/x
  3. Step 3: Cross multiply
    291.04x = 433.16 × 276.96
  4. Step 4: Simplify right side
    291.04x = 119,967.99
  5. Step 5: Solve for x
    x = 119,967.99/291.04
  6. Step 6: Final answer
    x = 412.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.