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Finding the Fourth Proportional to 847.10, 1,168.08 and 651.08

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Solution

The fourth proportional to 847.10, 1,168.08 and 651.08 is: 897.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.10 : 1,168.08 = 651.08 : x
  2. Step 2: Convert to fraction form
    847.10/1,168.08 = 651.08/x
  3. Step 3: Cross multiply
    847.10x = 1,168.08 × 651.08
  4. Step 4: Simplify right side
    847.10x = 760,513.53
  5. Step 5: Solve for x
    x = 760,513.53/847.10
  6. Step 6: Final answer
    x = 897.78

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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.