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Finding the Fourth Proportional to 522.97, 721.65 and 302.00

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Solution

The fourth proportional to 522.97, 721.65 and 302.00 is: 416.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.97 : 721.65 = 302.00 : x
  2. Step 2: Convert to fraction form
    522.97/721.65 = 302.00/x
  3. Step 3: Cross multiply
    522.97x = 721.65 × 302.00
  4. Step 4: Simplify right side
    522.97x = 217,934.97
  5. Step 5: Solve for x
    x = 217,934.97/522.97
  6. Step 6: Final answer
    x = 416.72

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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.