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Finding the Fourth Proportional to 760.27, 1,048.68 and 461.44

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Solution

The fourth proportional to 760.27, 1,048.68 and 461.44 is: 636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.27 : 1,048.68 = 461.44 : x
  2. Step 2: Convert to fraction form
    760.27/1,048.68 = 461.44/x
  3. Step 3: Cross multiply
    760.27x = 1,048.68 × 461.44
  4. Step 4: Simplify right side
    760.27x = 483,902.90
  5. Step 5: Solve for x
    x = 483,902.90/760.27
  6. Step 6: Final answer
    x = 636.49

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1.5x scale

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.