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Finding the Fourth Proportional to 616.76, 851.00 and 354.72

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Solution

The fourth proportional to 616.76, 851.00 and 354.72 is: 489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.76 : 851.00 = 354.72 : x
  2. Step 2: Convert to fraction form
    616.76/851.00 = 354.72/x
  3. Step 3: Cross multiply
    616.76x = 851.00 × 354.72
  4. Step 4: Simplify right side
    616.76x = 301,864.95
  5. Step 5: Solve for x
    x = 301,864.95/616.76
  6. Step 6: Final answer
    x = 489.44

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Find fourth proportional to 308.38, 425.50 and 177.36
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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.