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Finding the Fourth Proportional to 666.22, 920.28 and 604.12

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Solution

The fourth proportional to 666.22, 920.28 and 604.12 is: 834.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.22 : 920.28 = 604.12 : x
  2. Step 2: Convert to fraction form
    666.22/920.28 = 604.12/x
  3. Step 3: Cross multiply
    666.22x = 920.28 × 604.12
  4. Step 4: Simplify right side
    666.22x = 555,959.55
  5. Step 5: Solve for x
    x = 555,959.55/666.22
  6. Step 6: Final answer
    x = 834.50

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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.