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Finding the Fourth Proportional to 646.01, 891.51 and 366.26

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Solution

The fourth proportional to 646.01, 891.51 and 366.26 is: 505.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.01 : 891.51 = 366.26 : x
  2. Step 2: Convert to fraction form
    646.01/891.51 = 366.26/x
  3. Step 3: Cross multiply
    646.01x = 891.51 × 366.26
  4. Step 4: Simplify right side
    646.01x = 326,524.45
  5. Step 5: Solve for x
    x = 326,524.45/646.01
  6. Step 6: Final answer
    x = 505.45

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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.