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Finding the Fourth Proportional to 263.15, 363.16 and 152.63

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Solution

The fourth proportional to 263.15, 363.16 and 152.63 is: 210.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.15 : 363.16 = 152.63 : x
  2. Step 2: Convert to fraction form
    263.15/363.16 = 152.63/x
  3. Step 3: Cross multiply
    263.15x = 363.16 × 152.63
  4. Step 4: Simplify right side
    263.15x = 55,429.11
  5. Step 5: Solve for x
    x = 55,429.11/263.15
  6. Step 6: Final answer
    x = 210.64

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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.