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Finding the Fourth Proportional to 539.32, 744.05 and 352.75

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Solution

The fourth proportional to 539.32, 744.05 and 352.75 is: 486.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.32 : 744.05 = 352.75 : x
  2. Step 2: Convert to fraction form
    539.32/744.05 = 352.75/x
  3. Step 3: Cross multiply
    539.32x = 744.05 × 352.75
  4. Step 4: Simplify right side
    539.32x = 262,463.64
  5. Step 5: Solve for x
    x = 262,463.64/539.32
  6. Step 6: Final answer
    x = 486.66

Related Problems

Find fourth proportional to 269.66, 372.03 and 176.38
Half scale
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Double scale
Find fourth proportional to 540.32, 745.43 and 353.75
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.