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Finding the Fourth Proportional to 410.08, 567.04 and 311.76

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Solution

The fourth proportional to 410.08, 567.04 and 311.76 is: 431.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.08 : 567.04 = 311.76 : x
  2. Step 2: Convert to fraction form
    410.08/567.04 = 311.76/x
  3. Step 3: Cross multiply
    410.08x = 567.04 × 311.76
  4. Step 4: Simplify right side
    410.08x = 176,780.39
  5. Step 5: Solve for x
    x = 176,780.39/410.08
  6. Step 6: Final answer
    x = 431.09

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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.