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Finding the Fourth Proportional to 847.53, 1,168.50 and 689.58

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Solution

The fourth proportional to 847.53, 1,168.50 and 689.58 is: 950.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.53 : 1,168.50 = 689.58 : x
  2. Step 2: Convert to fraction form
    847.53/1,168.50 = 689.58/x
  3. Step 3: Cross multiply
    847.53x = 1,168.50 × 689.58
  4. Step 4: Simplify right side
    847.53x = 805,774.23
  5. Step 5: Solve for x
    x = 805,774.23/847.53
  6. Step 6: Final answer
    x = 950.73

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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.