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Finding the Fourth Proportional to 476.85, 715.29 and 202.56

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Solution

The fourth proportional to 476.85, 715.29 and 202.56 is: 303.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.85 : 715.29 = 202.56 : x
  2. Step 2: Convert to fraction form
    476.85/715.29 = 202.56/x
  3. Step 3: Cross multiply
    476.85x = 715.29 × 202.56
  4. Step 4: Simplify right side
    476.85x = 144,889.14
  5. Step 5: Solve for x
    x = 144,889.14/476.85
  6. Step 6: Final answer
    x = 303.85

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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.