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Finding the Fourth Proportional to 417.29, 575.78 and 251.51

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Solution

The fourth proportional to 417.29, 575.78 and 251.51 is: 347.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.29 : 575.78 = 251.51 : x
  2. Step 2: Convert to fraction form
    417.29/575.78 = 251.51/x
  3. Step 3: Cross multiply
    417.29x = 575.78 × 251.51
  4. Step 4: Simplify right side
    417.29x = 144,810.29
  5. Step 5: Solve for x
    x = 144,810.29/417.29
  6. Step 6: Final answer
    x = 347.03

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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.