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Finding the Fourth Proportional to 859.02, 1,184.67 and 564.18

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Solution

The fourth proportional to 859.02, 1,184.67 and 564.18 is: 778.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    859.02 : 1,184.67 = 564.18 : x
  2. Step 2: Convert to fraction form
    859.02/1,184.67 = 564.18/x
  3. Step 3: Cross multiply
    859.02x = 1,184.67 × 564.18
  4. Step 4: Simplify right side
    859.02x = 668,367.12
  5. Step 5: Solve for x
    x = 668,367.12/859.02
  6. Step 6: Final answer
    x = 778.06

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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.