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Finding the Fourth Proportional to 511.32, 763.05 and 456.64

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Solution

The fourth proportional to 511.32, 763.05 and 456.64 is: 681.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.32 : 763.05 = 456.64 : x
  2. Step 2: Convert to fraction form
    511.32/763.05 = 456.64/x
  3. Step 3: Cross multiply
    511.32x = 763.05 × 456.64
  4. Step 4: Simplify right side
    511.32x = 348,439.15
  5. Step 5: Solve for x
    x = 348,439.15/511.32
  6. Step 6: Final answer
    x = 681.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.