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Finding the Fourth Proportional to 534.21, 801.35 and 260.54

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Solution

The fourth proportional to 534.21, 801.35 and 260.54 is: 390.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.21 : 801.35 = 260.54 : x
  2. Step 2: Convert to fraction form
    534.21/801.35 = 260.54/x
  3. Step 3: Cross multiply
    534.21x = 801.35 × 260.54
  4. Step 4: Simplify right side
    534.21x = 208,778.42
  5. Step 5: Solve for x
    x = 208,778.42/534.21
  6. Step 6: Final answer
    x = 390.82

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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.