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Finding the Fourth Proportional to 477.29, 715.64 and 260.82

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Solution

The fourth proportional to 477.29, 715.64 and 260.82 is: 391.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.29 : 715.64 = 260.82 : x
  2. Step 2: Convert to fraction form
    477.29/715.64 = 260.82/x
  3. Step 3: Cross multiply
    477.29x = 715.64 × 260.82
  4. Step 4: Simplify right side
    477.29x = 186,651.92
  5. Step 5: Solve for x
    x = 186,651.92/477.29
  6. Step 6: Final answer
    x = 391.06

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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.