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Finding the Fourth Proportional to 511.06, 765.98 and 356.15

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Solution

The fourth proportional to 511.06, 765.98 and 356.15 is: 533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.06 : 765.98 = 356.15 : x
  2. Step 2: Convert to fraction form
    511.06/765.98 = 356.15/x
  3. Step 3: Cross multiply
    511.06x = 765.98 × 356.15
  4. Step 4: Simplify right side
    511.06x = 272,803.71
  5. Step 5: Solve for x
    x = 272,803.71/511.06
  6. Step 6: Final answer
    x = 533.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.