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Finding the Fourth Proportional to 407.71, 562.51 and 250.26

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Solution

The fourth proportional to 407.71, 562.51 and 250.26 is: 345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.71 : 562.51 = 250.26 : x
  2. Step 2: Convert to fraction form
    407.71/562.51 = 250.26/x
  3. Step 3: Cross multiply
    407.71x = 562.51 × 250.26
  4. Step 4: Simplify right side
    407.71x = 140,774.07
  5. Step 5: Solve for x
    x = 140,774.07/407.71
  6. Step 6: Final answer
    x = 345.28

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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.