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Finding the Fourth Proportional to 550.75, 760.07 and 314.74

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Solution

The fourth proportional to 550.75, 760.07 and 314.74 is: 434.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.75 : 760.07 = 314.74 : x
  2. Step 2: Convert to fraction form
    550.75/760.07 = 314.74/x
  3. Step 3: Cross multiply
    550.75x = 760.07 × 314.74
  4. Step 4: Simplify right side
    550.75x = 239,224.43
  5. Step 5: Solve for x
    x = 239,224.43/550.75
  6. Step 6: Final answer
    x = 434.36

Related Problems

Find fourth proportional to 275.38, 380.04 and 157.37
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Double scale
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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.