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Finding the Fourth Proportional to 211.35, 317.07 and 202.53

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Solution

The fourth proportional to 211.35, 317.07 and 202.53 is: 303.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.35 : 317.07 = 202.53 : x
  2. Step 2: Convert to fraction form
    211.35/317.07 = 202.53/x
  3. Step 3: Cross multiply
    211.35x = 317.07 × 202.53
  4. Step 4: Simplify right side
    211.35x = 64,216.19
  5. Step 5: Solve for x
    x = 64,216.19/211.35
  6. Step 6: Final answer
    x = 303.84

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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.