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Finding the Fourth Proportional to 476.87, 657.98 and 277.67

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Solution

The fourth proportional to 476.87, 657.98 and 277.67 is: 383.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.87 : 657.98 = 277.67 : x
  2. Step 2: Convert to fraction form
    476.87/657.98 = 277.67/x
  3. Step 3: Cross multiply
    476.87x = 657.98 × 277.67
  4. Step 4: Simplify right side
    476.87x = 182,699.92
  5. Step 5: Solve for x
    x = 182,699.92/476.87
  6. Step 6: Final answer
    x = 383.12

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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.