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Finding the Fourth Proportional to 572.23, 789.27 and 553.19

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Solution

The fourth proportional to 572.23, 789.27 and 553.19 is: 763.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.23 : 789.27 = 553.19 : x
  2. Step 2: Convert to fraction form
    572.23/789.27 = 553.19/x
  3. Step 3: Cross multiply
    572.23x = 789.27 × 553.19
  4. Step 4: Simplify right side
    572.23x = 436,616.27
  5. Step 5: Solve for x
    x = 436,616.27/572.23
  6. Step 6: Final answer
    x = 763.02

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.