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Finding the Fourth Proportional to 474.48, 655.02 and 320.04

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Solution

The fourth proportional to 474.48, 655.02 and 320.04 is: 441.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.48 : 655.02 = 320.04 : x
  2. Step 2: Convert to fraction form
    474.48/655.02 = 320.04/x
  3. Step 3: Cross multiply
    474.48x = 655.02 × 320.04
  4. Step 4: Simplify right side
    474.48x = 209,632.60
  5. Step 5: Solve for x
    x = 209,632.60/474.48
  6. Step 6: Final answer
    x = 441.82

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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.