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Finding the Fourth Proportional to 696.98, 1,041.38 and 672.76

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Solution

The fourth proportional to 696.98, 1,041.38 and 672.76 is: 1,005.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.98 : 1,041.38 = 672.76 : x
  2. Step 2: Convert to fraction form
    696.98/1,041.38 = 672.76/x
  3. Step 3: Cross multiply
    696.98x = 1,041.38 × 672.76
  4. Step 4: Simplify right side
    696.98x = 700,598.81
  5. Step 5: Solve for x
    x = 700,598.81/696.98
  6. Step 6: Final answer
    x = 1,005.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.