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Finding the Fourth Proportional to 521.22, 717.18 and 508.92

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Solution

The fourth proportional to 521.22, 717.18 and 508.92 is: 700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.22 : 717.18 = 508.92 : x
  2. Step 2: Convert to fraction form
    521.22/717.18 = 508.92/x
  3. Step 3: Cross multiply
    521.22x = 717.18 × 508.92
  4. Step 4: Simplify right side
    521.22x = 364,987.25
  5. Step 5: Solve for x
    x = 364,987.25/521.22
  6. Step 6: Final answer
    x = 700.26

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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.