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Finding the Fourth Proportional to 762, 1,051.56 and 467.16

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Solution

The fourth proportional to 762, 1,051.56 and 467.16 is: 644.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    762 : 1,051.56 = 467.16 : x
  2. Step 2: Convert to fraction form
    762/1,051.56 = 467.16/x
  3. Step 3: Cross multiply
    762x = 1,051.56 × 467.16
  4. Step 4: Simplify right side
    762x = 491,246.77
  5. Step 5: Solve for x
    x = 491,246.77/762
  6. Step 6: Final answer
    x = 644.68

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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.