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Finding the Fourth Proportional to 521.22, 718.29 and 373.61

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Solution

The fourth proportional to 521.22, 718.29 and 373.61 is: 514.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.22 : 718.29 = 373.61 : x
  2. Step 2: Convert to fraction form
    521.22/718.29 = 373.61/x
  3. Step 3: Cross multiply
    521.22x = 718.29 × 373.61
  4. Step 4: Simplify right side
    521.22x = 268,356.74
  5. Step 5: Solve for x
    x = 268,356.74/521.22
  6. Step 6: Final answer
    x = 514.86

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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.