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Finding the Fourth Proportional to 533.60, 800.40 and 476.90

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Solution

The fourth proportional to 533.60, 800.40 and 476.90 is: 715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.60 : 800.40 = 476.90 : x
  2. Step 2: Convert to fraction form
    533.60/800.40 = 476.90/x
  3. Step 3: Cross multiply
    533.60x = 800.40 × 476.90
  4. Step 4: Simplify right side
    533.60x = 381,710.76
  5. Step 5: Solve for x
    x = 381,710.76/533.60
  6. Step 6: Final answer
    x = 715.35

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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.