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Finding the Fourth Proportional to 701.97, 968.72 and 387.23

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Solution

The fourth proportional to 701.97, 968.72 and 387.23 is: 534.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.97 : 968.72 = 387.23 : x
  2. Step 2: Convert to fraction form
    701.97/968.72 = 387.23/x
  3. Step 3: Cross multiply
    701.97x = 968.72 × 387.23
  4. Step 4: Simplify right side
    701.97x = 375,115.51
  5. Step 5: Solve for x
    x = 375,115.51/701.97
  6. Step 6: Final answer
    x = 534.38

Related Problems

Find fourth proportional to 350.99, 484.36 and 193.62
Half scale
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Double scale
Find fourth proportional to 702.97, 970.09 and 388.23
Similar ratio
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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.