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Finding the Fourth Proportional to 410.72, 566.39 and 278.03

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Solution

The fourth proportional to 410.72, 566.39 and 278.03 is: 383.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.72 : 566.39 = 278.03 : x
  2. Step 2: Convert to fraction form
    410.72/566.39 = 278.03/x
  3. Step 3: Cross multiply
    410.72x = 566.39 × 278.03
  4. Step 4: Simplify right side
    410.72x = 157,472.02
  5. Step 5: Solve for x
    x = 157,472.02/410.72
  6. Step 6: Final answer
    x = 383.41

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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.