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Finding the Fourth Proportional to 646.24, 892.08 and 433.60

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Solution

The fourth proportional to 646.24, 892.08 and 433.60 is: 598.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.24 : 892.08 = 433.60 : x
  2. Step 2: Convert to fraction form
    646.24/892.08 = 433.60/x
  3. Step 3: Cross multiply
    646.24x = 892.08 × 433.60
  4. Step 4: Simplify right side
    646.24x = 386,805.89
  5. Step 5: Solve for x
    x = 386,805.89/646.24
  6. Step 6: Final answer
    x = 598.55

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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.