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Finding the Fourth Proportional to 776.04, 1,158.53 and 674.12

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Solution

The fourth proportional to 776.04, 1,158.53 and 674.12 is: 1,006.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    776.04 : 1,158.53 = 674.12 : x
  2. Step 2: Convert to fraction form
    776.04/1,158.53 = 674.12/x
  3. Step 3: Cross multiply
    776.04x = 1,158.53 × 674.12
  4. Step 4: Simplify right side
    776.04x = 780,988.24
  5. Step 5: Solve for x
    x = 780,988.24/776.04
  6. Step 6: Final answer
    x = 1,006.38

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1.5x scale

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.