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Finding the Fourth Proportional to 474.17, 711.25 and 259.11

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Solution

The fourth proportional to 474.17, 711.25 and 259.11 is: 388.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.17 : 711.25 = 259.11 : x
  2. Step 2: Convert to fraction form
    474.17/711.25 = 259.11/x
  3. Step 3: Cross multiply
    474.17x = 711.25 × 259.11
  4. Step 4: Simplify right side
    474.17x = 184,291.99
  5. Step 5: Solve for x
    x = 184,291.99/474.17
  6. Step 6: Final answer
    x = 388.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.