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Finding the Fourth Proportional to 447.04, 616.56 and 291.76

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Solution

The fourth proportional to 447.04, 616.56 and 291.76 is: 402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.04 : 616.56 = 291.76 : x
  2. Step 2: Convert to fraction form
    447.04/616.56 = 291.76/x
  3. Step 3: Cross multiply
    447.04x = 616.56 × 291.76
  4. Step 4: Simplify right side
    447.04x = 179,887.55
  5. Step 5: Solve for x
    x = 179,887.55/447.04
  6. Step 6: Final answer
    x = 402.40

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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.