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Finding the Fourth Proportional to 548.64, 823.17 and 260.10

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Solution

The fourth proportional to 548.64, 823.17 and 260.10 is: 390.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.64 : 823.17 = 260.10 : x
  2. Step 2: Convert to fraction form
    548.64/823.17 = 260.10/x
  3. Step 3: Cross multiply
    548.64x = 823.17 × 260.10
  4. Step 4: Simplify right side
    548.64x = 214,106.52
  5. Step 5: Solve for x
    x = 214,106.52/548.64
  6. Step 6: Final answer
    x = 390.25

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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.