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Finding the Fourth Proportional to 556.15, 833.98 and 171.31

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Solution

The fourth proportional to 556.15, 833.98 and 171.31 is: 256.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.15 : 833.98 = 171.31 : x
  2. Step 2: Convert to fraction form
    556.15/833.98 = 171.31/x
  3. Step 3: Cross multiply
    556.15x = 833.98 × 171.31
  4. Step 4: Simplify right side
    556.15x = 142,869.11
  5. Step 5: Solve for x
    x = 142,869.11/556.15
  6. Step 6: Final answer
    x = 256.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.