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Finding the Fourth Proportional to 440.25, 607.55 and 265.64

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Solution

The fourth proportional to 440.25, 607.55 and 265.64 is: 366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.25 : 607.55 = 265.64 : x
  2. Step 2: Convert to fraction form
    440.25/607.55 = 265.64/x
  3. Step 3: Cross multiply
    440.25x = 607.55 × 265.64
  4. Step 4: Simplify right side
    440.25x = 161,385.22
  5. Step 5: Solve for x
    x = 161,385.22/440.25
  6. Step 6: Final answer
    x = 366.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.