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Finding the Fourth Proportional to 923.41, 1,274.38 and 525.20

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Solution

The fourth proportional to 923.41, 1,274.38 and 525.20 is: 724.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.41 : 1,274.38 = 525.20 : x
  2. Step 2: Convert to fraction form
    923.41/1,274.38 = 525.20/x
  3. Step 3: Cross multiply
    923.41x = 1,274.38 × 525.20
  4. Step 4: Simplify right side
    923.41x = 669,301.05
  5. Step 5: Solve for x
    x = 669,301.05/923.41
  6. Step 6: Final answer
    x = 724.82

Related Problems

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Half scale
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Double scale
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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.