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Finding the Fourth Proportional to 533.51, 799.51 and 478.32

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Solution

The fourth proportional to 533.51, 799.51 and 478.32 is: 716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.51 : 799.51 = 478.32 : x
  2. Step 2: Convert to fraction form
    533.51/799.51 = 478.32/x
  3. Step 3: Cross multiply
    533.51x = 799.51 × 478.32
  4. Step 4: Simplify right side
    533.51x = 382,421.62
  5. Step 5: Solve for x
    x = 382,421.62/533.51
  6. Step 6: Final answer
    x = 716.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.