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Finding the Fourth Proportional to 229.64, 317.01 and 145.69

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Solution

The fourth proportional to 229.64, 317.01 and 145.69 is: 201.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.64 : 317.01 = 145.69 : x
  2. Step 2: Convert to fraction form
    229.64/317.01 = 145.69/x
  3. Step 3: Cross multiply
    229.64x = 317.01 × 145.69
  4. Step 4: Simplify right side
    229.64x = 46,184.46
  5. Step 5: Solve for x
    x = 46,184.46/229.64
  6. Step 6: Final answer
    x = 201.12

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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.