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Finding the Fourth Proportional to 760.53, 1,048.99 and 494.48

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Solution

The fourth proportional to 760.53, 1,048.99 and 494.48 is: 682.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.53 : 1,048.99 = 494.48 : x
  2. Step 2: Convert to fraction form
    760.53/1,048.99 = 494.48/x
  3. Step 3: Cross multiply
    760.53x = 1,048.99 × 494.48
  4. Step 4: Simplify right side
    760.53x = 518,706.59
  5. Step 5: Solve for x
    x = 518,706.59/760.53
  6. Step 6: Final answer
    x = 682.03

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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.