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Finding the Fourth Proportional to 762.09, 1,051.73 and 463.55

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Solution

The fourth proportional to 762.09, 1,051.73 and 463.55 is: 639.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.09 : 1,051.73 = 463.55 : x
  2. Step 2: Convert to fraction form
    762.09/1,051.73 = 463.55/x
  3. Step 3: Cross multiply
    762.09x = 1,051.73 × 463.55
  4. Step 4: Simplify right side
    762.09x = 487,529.17
  5. Step 5: Solve for x
    x = 487,529.17/762.09
  6. Step 6: Final answer
    x = 639.72

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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.