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Finding the Fourth Proportional to 1,159.77, 1,599.82 and 716.92

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Solution

The fourth proportional to 1,159.77, 1,599.82 and 716.92 is: 988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.77 : 1,599.82 = 716.92 : x
  2. Step 2: Convert to fraction form
    1,159.77/1,599.82 = 716.92/x
  3. Step 3: Cross multiply
    1,159.77x = 1,599.82 × 716.92
  4. Step 4: Simplify right side
    1,159.77x = 1,146,942.95
  5. Step 5: Solve for x
    x = 1,146,942.95/1,159.77
  6. Step 6: Final answer
    x = 988.94

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1.5x scale

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.