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Finding the Fourth Proportional to 310.61, 463.22 and 265.25

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Solution

The fourth proportional to 310.61, 463.22 and 265.25 is: 395.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.61 : 463.22 = 265.25 : x
  2. Step 2: Convert to fraction form
    310.61/463.22 = 265.25/x
  3. Step 3: Cross multiply
    310.61x = 463.22 × 265.25
  4. Step 4: Simplify right side
    310.61x = 122,869.11
  5. Step 5: Solve for x
    x = 122,869.11/310.61
  6. Step 6: Final answer
    x = 395.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.