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Finding the Fourth Proportional to 263.18, 360.55 and 253.32

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Solution

The fourth proportional to 263.18, 360.55 and 253.32 is: 347.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.18 : 360.55 = 253.32 : x
  2. Step 2: Convert to fraction form
    263.18/360.55 = 253.32/x
  3. Step 3: Cross multiply
    263.18x = 360.55 × 253.32
  4. Step 4: Simplify right side
    263.18x = 91,336.06
  5. Step 5: Solve for x
    x = 91,336.06/263.18
  6. Step 6: Final answer
    x = 347.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.