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Finding the Fourth Proportional to 607.55, 910.54 and 260.79

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Solution

The fourth proportional to 607.55, 910.54 and 260.79 is: 390.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.55 : 910.54 = 260.79 : x
  2. Step 2: Convert to fraction form
    607.55/910.54 = 260.79/x
  3. Step 3: Cross multiply
    607.55x = 910.54 × 260.79
  4. Step 4: Simplify right side
    607.55x = 237,456.64
  5. Step 5: Solve for x
    x = 237,456.64/607.55
  6. Step 6: Final answer
    x = 390.85

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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.