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Finding the Fourth Proportional to 582.28, 803.55 and 320.29

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Solution

The fourth proportional to 582.28, 803.55 and 320.29 is: 442.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.28 : 803.55 = 320.29 : x
  2. Step 2: Convert to fraction form
    582.28/803.55 = 320.29/x
  3. Step 3: Cross multiply
    582.28x = 803.55 × 320.29
  4. Step 4: Simplify right side
    582.28x = 257,369.03
  5. Step 5: Solve for x
    x = 257,369.03/582.28
  6. Step 6: Final answer
    x = 442.00

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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.