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Finding the Fourth Proportional to 317.15, 474.93 and 186.83

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Solution

The fourth proportional to 317.15, 474.93 and 186.83 is: 279.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.15 : 474.93 = 186.83 : x
  2. Step 2: Convert to fraction form
    317.15/474.93 = 186.83/x
  3. Step 3: Cross multiply
    317.15x = 474.93 × 186.83
  4. Step 4: Simplify right side
    317.15x = 88,728.80
  5. Step 5: Solve for x
    x = 88,728.80/317.15
  6. Step 6: Final answer
    x = 279.77

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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.