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Finding the Fourth Proportional to 679.64, 943.04 and 652.22

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Solution

The fourth proportional to 679.64, 943.04 and 652.22 is: 904.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.64 : 943.04 = 652.22 : x
  2. Step 2: Convert to fraction form
    679.64/943.04 = 652.22/x
  3. Step 3: Cross multiply
    679.64x = 943.04 × 652.22
  4. Step 4: Simplify right side
    679.64x = 615,069.55
  5. Step 5: Solve for x
    x = 615,069.55/679.64
  6. Step 6: Final answer
    x = 904.99

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.