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Finding the Fourth Proportional to 474.91, 712.59 and 214.98

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Solution

The fourth proportional to 474.91, 712.59 and 214.98 is: 322.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.91 : 712.59 = 214.98 : x
  2. Step 2: Convert to fraction form
    474.91/712.59 = 214.98/x
  3. Step 3: Cross multiply
    474.91x = 712.59 × 214.98
  4. Step 4: Simplify right side
    474.91x = 153,192.60
  5. Step 5: Solve for x
    x = 153,192.60/474.91
  6. Step 6: Final answer
    x = 322.57

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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.