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Finding the Fourth Proportional to 511.60, 766.52 and 402.62

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Solution

The fourth proportional to 511.60, 766.52 and 402.62 is: 603.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.60 : 766.52 = 402.62 : x
  2. Step 2: Convert to fraction form
    511.60/766.52 = 402.62/x
  3. Step 3: Cross multiply
    511.60x = 766.52 × 402.62
  4. Step 4: Simplify right side
    511.60x = 308,616.28
  5. Step 5: Solve for x
    x = 308,616.28/511.60
  6. Step 6: Final answer
    x = 603.24

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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.