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Finding the Fourth Proportional to 646.29, 890.24 and 546.60

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Solution

The fourth proportional to 646.29, 890.24 and 546.60 is: 752.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.29 : 890.24 = 546.60 : x
  2. Step 2: Convert to fraction form
    646.29/890.24 = 546.60/x
  3. Step 3: Cross multiply
    646.29x = 890.24 × 546.60
  4. Step 4: Simplify right side
    646.29x = 486,602.45
  5. Step 5: Solve for x
    x = 486,602.45/646.29
  6. Step 6: Final answer
    x = 752.92

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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.