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Finding the Fourth Proportional to 760.39, 1,049.15 and 461.63

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Solution

The fourth proportional to 760.39, 1,049.15 and 461.63 is: 636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.39 : 1,049.15 = 461.63 : x
  2. Step 2: Convert to fraction form
    760.39/1,049.15 = 461.63/x
  3. Step 3: Cross multiply
    760.39x = 1,049.15 × 461.63
  4. Step 4: Simplify right side
    760.39x = 484,316.01
  5. Step 5: Solve for x
    x = 484,316.01/760.39
  6. Step 6: Final answer
    x = 636.93

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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.