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Finding the Fourth Proportional to 474.16, 655.10 and 404.95

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Solution

The fourth proportional to 474.16, 655.10 and 404.95 is: 559.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.16 : 655.10 = 404.95 : x
  2. Step 2: Convert to fraction form
    474.16/655.10 = 404.95/x
  3. Step 3: Cross multiply
    474.16x = 655.10 × 404.95
  4. Step 4: Simplify right side
    474.16x = 265,277.44
  5. Step 5: Solve for x
    x = 265,277.44/474.16
  6. Step 6: Final answer
    x = 559.47

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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.