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Finding the Fourth Proportional to 475.01, 655.52 and 278.49

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Solution

The fourth proportional to 475.01, 655.52 and 278.49 is: 384.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.01 : 655.52 = 278.49 : x
  2. Step 2: Convert to fraction form
    475.01/655.52 = 278.49/x
  3. Step 3: Cross multiply
    475.01x = 655.52 × 278.49
  4. Step 4: Simplify right side
    475.01x = 182,554.37
  5. Step 5: Solve for x
    x = 182,554.37/475.01
  6. Step 6: Final answer
    x = 384.32

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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.