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Finding the Fourth Proportional to 708.51, 1,062.77 and 188.51

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Solution

The fourth proportional to 708.51, 1,062.77 and 188.51 is: 282.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.51 : 1,062.77 = 188.51 : x
  2. Step 2: Convert to fraction form
    708.51/1,062.77 = 188.51/x
  3. Step 3: Cross multiply
    708.51x = 1,062.77 × 188.51
  4. Step 4: Simplify right side
    708.51x = 200,347.82
  5. Step 5: Solve for x
    x = 200,347.82/708.51
  6. Step 6: Final answer
    x = 282.77

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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.