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Finding the Fourth Proportional to 474.59, 654.34 and 403.63

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Solution

The fourth proportional to 474.59, 654.34 and 403.63 is: 556.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.59 : 654.34 = 403.63 : x
  2. Step 2: Convert to fraction form
    474.59/654.34 = 403.63/x
  3. Step 3: Cross multiply
    474.59x = 654.34 × 403.63
  4. Step 4: Simplify right side
    474.59x = 264,108.61
  5. Step 5: Solve for x
    x = 264,108.61/474.59
  6. Step 6: Final answer
    x = 556.50

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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.