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Finding the Fourth Proportional to 535.61, 739.63 and 339.19

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Solution

The fourth proportional to 535.61, 739.63 and 339.19 is: 468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.61 : 739.63 = 339.19 : x
  2. Step 2: Convert to fraction form
    535.61/739.63 = 339.19/x
  3. Step 3: Cross multiply
    535.61x = 739.63 × 339.19
  4. Step 4: Simplify right side
    535.61x = 250,873.67
  5. Step 5: Solve for x
    x = 250,873.67/535.61
  6. Step 6: Final answer
    x = 468.39

Related Problems

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Half scale
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Double scale
Find fourth proportional to 536.61, 741.01 and 340.19
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.