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Finding the Fourth Proportional to 476.84, 658.02 and 280.36

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Solution

The fourth proportional to 476.84, 658.02 and 280.36 is: 386.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.84 : 658.02 = 280.36 : x
  2. Step 2: Convert to fraction form
    476.84/658.02 = 280.36/x
  3. Step 3: Cross multiply
    476.84x = 658.02 × 280.36
  4. Step 4: Simplify right side
    476.84x = 184,484.36
  5. Step 5: Solve for x
    x = 184,484.36/476.84
  6. Step 6: Final answer
    x = 386.89

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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.