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Finding the Fourth Proportional to 230.04, 317.31 and 156.39

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Solution

The fourth proportional to 230.04, 317.31 and 156.39 is: 215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.04 : 317.31 = 156.39 : x
  2. Step 2: Convert to fraction form
    230.04/317.31 = 156.39/x
  3. Step 3: Cross multiply
    230.04x = 317.31 × 156.39
  4. Step 4: Simplify right side
    230.04x = 49,624.11
  5. Step 5: Solve for x
    x = 49,624.11/230.04
  6. Step 6: Final answer
    x = 215.72

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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.