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Finding the Fourth Proportional to 580.52, 801.12 and 318.52

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Solution

The fourth proportional to 580.52, 801.12 and 318.52 is: 439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.52 : 801.12 = 318.52 : x
  2. Step 2: Convert to fraction form
    580.52/801.12 = 318.52/x
  3. Step 3: Cross multiply
    580.52x = 801.12 × 318.52
  4. Step 4: Simplify right side
    580.52x = 255,172.74
  5. Step 5: Solve for x
    x = 255,172.74/580.52
  6. Step 6: Final answer
    x = 439.56

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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.