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Finding the Fourth Proportional to 446.60, 616.66 and 316.02

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Solution

The fourth proportional to 446.60, 616.66 and 316.02 is: 436.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.60 : 616.66 = 316.02 : x
  2. Step 2: Convert to fraction form
    446.60/616.66 = 316.02/x
  3. Step 3: Cross multiply
    446.60x = 616.66 × 316.02
  4. Step 4: Simplify right side
    446.60x = 194,876.89
  5. Step 5: Solve for x
    x = 194,876.89/446.60
  6. Step 6: Final answer
    x = 436.36

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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.