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Finding the Fourth Proportional to 582.28, 803.22 and 478.60

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Solution

The fourth proportional to 582.28, 803.22 and 478.60 is: 660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.28 : 803.22 = 478.60 : x
  2. Step 2: Convert to fraction form
    582.28/803.22 = 478.60/x
  3. Step 3: Cross multiply
    582.28x = 803.22 × 478.60
  4. Step 4: Simplify right side
    582.28x = 384,421.09
  5. Step 5: Solve for x
    x = 384,421.09/582.28
  6. Step 6: Final answer
    x = 660.20

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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.