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Finding the Fourth Proportional to 786.76, 1,085.24 and 566

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Solution

The fourth proportional to 786.76, 1,085.24 and 566 is: 780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    786.76 : 1,085.24 = 566 : x
  2. Step 2: Convert to fraction form
    786.76/1,085.24 = 566/x
  3. Step 3: Cross multiply
    786.76x = 1,085.24 × 566
  4. Step 4: Simplify right side
    786.76x = 614,245.84
  5. Step 5: Solve for x
    x = 614,245.84/786.76
  6. Step 6: Final answer
    x = 780.73

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Find fourth proportional to 393.38, 542.62 and 283
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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.