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Finding the Fourth Proportional to 474.12, 654.28 and 264.28

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Solution

The fourth proportional to 474.12, 654.28 and 264.28 is: 364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.12 : 654.28 = 264.28 : x
  2. Step 2: Convert to fraction form
    474.12/654.28 = 264.28/x
  3. Step 3: Cross multiply
    474.12x = 654.28 × 264.28
  4. Step 4: Simplify right side
    474.12x = 172,913.12
  5. Step 5: Solve for x
    x = 172,913.12/474.12
  6. Step 6: Final answer
    x = 364.70

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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.