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Finding the Fourth Proportional to 571.69, 789.01 and 424.75

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Solution

The fourth proportional to 571.69, 789.01 and 424.75 is: 586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.69 : 789.01 = 424.75 : x
  2. Step 2: Convert to fraction form
    571.69/789.01 = 424.75/x
  3. Step 3: Cross multiply
    571.69x = 789.01 × 424.75
  4. Step 4: Simplify right side
    571.69x = 335,132.00
  5. Step 5: Solve for x
    x = 335,132.00/571.69
  6. Step 6: Final answer
    x = 586.21

Related Problems

Find fourth proportional to 285.85, 394.51 and 212.38
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.