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Finding the Fourth Proportional to 477.48, 658.34 and 322.28

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Solution

The fourth proportional to 477.48, 658.34 and 322.28 is: 444.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.48 : 658.34 = 322.28 : x
  2. Step 2: Convert to fraction form
    477.48/658.34 = 322.28/x
  3. Step 3: Cross multiply
    477.48x = 658.34 × 322.28
  4. Step 4: Simplify right side
    477.48x = 212,169.82
  5. Step 5: Solve for x
    x = 212,169.82/477.48
  6. Step 6: Final answer
    x = 444.35

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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.