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Finding the Fourth Proportional to 523.19, 721.98 and 302.18

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Solution

The fourth proportional to 523.19, 721.98 and 302.18 is: 416.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.19 : 721.98 = 302.18 : x
  2. Step 2: Convert to fraction form
    523.19/721.98 = 302.18/x
  3. Step 3: Cross multiply
    523.19x = 721.98 × 302.18
  4. Step 4: Simplify right side
    523.19x = 218,164.31
  5. Step 5: Solve for x
    x = 218,164.31/523.19
  6. Step 6: Final answer
    x = 416.99

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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.