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Finding the Fourth Proportional to 869.04, 1,197.36 and 694.08

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Solution

The fourth proportional to 869.04, 1,197.36 and 694.08 is: 956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    869.04 : 1,197.36 = 694.08 : x
  2. Step 2: Convert to fraction form
    869.04/1,197.36 = 694.08/x
  3. Step 3: Cross multiply
    869.04x = 1,197.36 × 694.08
  4. Step 4: Simplify right side
    869.04x = 831,063.63
  5. Step 5: Solve for x
    x = 831,063.63/869.04
  6. Step 6: Final answer
    x = 956.30

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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.